Number 40
Number 40 is said 🔊, write in letters as follows: forty . Ordinal number 40th is said 🔊 and write: fortieth. Phone prefix +40 or 0040. The meaning of number 40: Basic maths, advanced mathematics and properties, computer science, numerology, codes and images, writing and naming in other languages, other interesting facts and comments. Number 40 in News.
Useful information about number 40
The decimal (Arabic) number 40 converted to a Roman number is XL.
Roman and decimal number conversions.
40 kilograms (kg) = 88.2 pounds (lb)
40 pounds (lb) = 18.1 kilograms (kg)
40 kilometers (km) equals to 24.855 miles (mi).
40 miles (mi) equals to 64.374 kilometers (km).
40 meters (m) equals to 64.374 feet (ft).
40 feet (ft) equals 12.192 meters (m).
40 centimeters (cm) equals to 15.7 inches (in).
40 inches (in) equals to 101.6 centimeters (cm).
40° Fahrenheit (°F) equals to 104° Celsius (°C)
40° Celsius (°C) equals to 4.4° Fahrenheit (°F)
40 Horsepower (hp) equals to 29.42 kilowatts (kW)
40 kilowatts (kW) equals to 54.39 horsepower (hp)
The number 40 converted to a Mayan number is  
Decimal and Mayan number conversions. 
Weight conversion
40 kilograms (kg) = 88.2 pounds (lb)
40 pounds (lb) = 18.1 kilograms (kg)
Length conversion
40 kilometers (km) equals to 24.855 miles (mi).
40 miles (mi) equals to 64.374 kilometers (km).
40 meters (m) equals to 64.374 feet (ft).
40 feet (ft) equals 12.192 meters (m).
40 centimeters (cm) equals to 15.7 inches (in).
40 inches (in) equals to 101.6 centimeters (cm).
Temperature conversion
40° Fahrenheit (°F) equals to 104° Celsius (°C)
40° Celsius (°C) equals to 4.4° Fahrenheit (°F)
Power conversion
40 Horsepower (hp) equals to 29.42 kilowatts (kW)
40 kilowatts (kW) equals to 54.39 horsepower (hp)
Codes and images of the number 40
Number 40 morse code: .... Sign language for number 40:
Images of the number  
Image (1) of the number  Image (2) of the number 
There is no copyright for these images.
Number 40 infographic.

More images, other sizes, codes and colors ... 
Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)
Gregorian year 40 is Buddhist year 583.Buddhist year 40 is Gregorian year 503 a. C.
Gregorian year 40 is Islamic year 600 or 599.
Islamic year 40 is Gregorian year 660 or 661.
Gregorian year 40 is Persian year 583 or 582.
Persian year 40 is Gregorian 661 or 662.
Gregorian year 40 is Hebrew year 3800 or 3801.
Hebrew year 40 is Gregorian year 3720 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is official in Iran and Afghanistan.
Share in social networks
Mathematics of no. 40
Multiplications
Multiplication table of 40
40 multiplied by two equals 80 (40 x 2 = 80).
40 multiplied by three equals 120 (40 x 3 = 120).
40 multiplied by four equals 160 (40 x 4 = 160).
40 multiplied by five equals 200 (40 x 5 = 200).
show multiplications by 6, 7, 8, 9 ...
Fractions: decimal fraction and common fraction
Fraction table of 40
Half of 40 is 20 (40 / 2 = 20).
One third of 40 is 13,3333 (40 / 3 = 13,3333 = 13 1/3).
One quarter of 40 is 10 (40 / 4 = 10).
One fifth of 40 is 8 (40 / 5 = 8).
show fractions by 6, 7, 8, 9 ...
Calculator
40  
Advanced math operations
Is Prime?
The number 40 is not a prime number. The closest prime numbers are 37, 41.
40th prime number in order is 173.
Factorization and dividers
Factorization 2 * 2 * 2 * 5 = 40
Divisors of number 40 are 1 , 2 , 4 , 5 , 8 , 10 , 20 , 40
Total Divisors 8.
Sum of Divisors 90.
Powers
The second power of 40^{2} is 1.600.
The third power of 40^{3} is 64.000.
Roots
The square root √40 is 6,324555.
The cube root of ^{3}√40 is 3,419952.
Logarithms
The natural logarithm of No. ln 40 = log_{e} 40 = 3,688879.
The logarithm to base 10 of No. log_{10} 40 = 1,60206.
The Napierian logarithm of No. log_{1/e} 40 = 3,688879.
Trigonometric functions
The cosine of 40 is 0,666938.The sine of 40 is 0,745113.
The tangent of 40 is 1,117215.
Properties of the number 40
Is a Friedman number: NoIs a Fibonacci number: No
Is a Bell number: No
Is a palindromic number: No
Is a pentagonal number: No
Is a perfect number: No
Number 40 in Computer Science
Code type  Code value 

Ascii  40 ascii is character ( 
Unix time  Unix time 40 is equal to Thursday Jan. 1, 1970, 12:40 a.m. GMT 
IPv4, IPv6  Number 40 internet address in dotted format v4 0.0.0.40, v6 ::28 
40 Decimal  = 101000 Binary 
40 Decimal  = 1111 Ternary 
40 Decimal  = 50 Octal 
40 Decimal  = 28 Hexadecimal (0x28 hex) 
40 BASE64  NDA= 
40 MD5  d645920e395fedad7bbbed0eca3fe2e0 
40 SHA1  af3e133428b9e25c55bc59fe534248e6a0c0f17b 
More SHA codes related to the number 40 ... 
Numerology 40
The meaning of the number 4 (four), numerology 4
Character frequency 4: 1
The number four (4) came to establish stability and to follow the process in the world. It needs to apply a clear purpose to develop internal stability. It evokes a sense of duty and discipline. Number 3 personality speaks of solid construction. It teaches us to evolve in the tangible and material world, to develop reason and logic and our capacity for effort, accomplishment and work.
More about the meaning of the number 4 (four), numerology 4 ...
The meaning of the number 0 (zero), numerology 0
Character frequency 0: 1
Everything begins at the zero point and at the zero point everything ends. Many times we do not know the end, but we know the beginning, it is at the zero point.
More about the meaning of the number 0 (zero), numerology 0 ...
Interesting facts about the number 40
Asteroids
 (40) Harmonia is asteroid number 40. It was discovered by H. M. S. Goldschmidt from Paris on 3/31/1856.
Aircrafts and flights
 07/20/1981 the Somali Airlines plane, flight number 40, Fokker F27 Friendship 600 crashed in Bal''ad District, Somalia 44 passengers and 6 crew members died.
Areas, mountains and surfaces
 The total area of Prince of Wales Island is 12,872 square miles (33,339 square km). Country Canada (Nunavut). 40th largest island in the world.
Distances between cities
 There is a 25 miles (40 km) direct distance between Bekasi (Indonesia) and Tangerang (Indonesia).
 There is a 40 miles (64 km) direct distance between Benxi (China) and Fushun (China).
 There is a 40 miles (64 km) direct distance between Guankou (China) and Changsha (China).
 There is a 25 miles (40 km) direct distance between Huaibei (China) and Tongshan (China).
 There is a 25 miles (40 km) direct distance between Changshu City (China) and Suzhou (China).
 There is a 25 miles (40 km) direct distance between Chiba (Japan) and Tokyo (Japan).
 There is a 25 miles (40 km) direct distance between Jieyang (China) and Shantou (China).
 There is a 40 miles (63 km) direct distance between Kobe (Japan) and Kyoto (Japan).
 There is a 40 miles (64 km) direct distance between Xinxiang (China) and Zhengzhou (China).
Economy
 The CAC 40, which takes its name from the first automation system of the Paris Stock Exchange, is a French stock index, a benchmark for Euronext Paris. Read more .
In other fields
 It is the traditional Hebrew number for the duration of a trial of some kind, when times are tough and a person's faith is tested.
Mathematics
 40 is the only number whose letters are in alphabetical order.
Mobile and telephony
 Number 40 or +40 or 0040 is a dial the international call prefix for Romania. (00/+) is dial the international call prefix.
Music
 Forty '40' is a song by the Irish band U2, incorporated into the album War.
 '40 Dog ', in Spanish '40 perros', is the first and only single from the R & B / HipHop duo Sweet' N Lo released in 1993 from their only album Pucker Up.
 '40' 'is a song by the Scottish Indie Rock band Franz Ferdinand.
 '40 Kinds of Sadness ', in Spanish '40 types of sadness', is the third and last single from Ryan Cabrera.
 UB40 is an English dub and reggae pop music group formed in Birmingham, England in 1978. The band's name is a reference to the Unemployment Benefits document that was signed in the UK during the band's formation. The form was Unemployment Benefit, Form 40.
 '40 Day Dream '/' Geez Louise 'is a single from' Edward Sharpe and the Magnetic Zeros'.
 '40 Oz 'is a song by the hip hop group Brokencyde.
 '40 Thieves ', in Spanish '40 thieves', is a song by the American punk pop band A Loss for Words (formerly Last Ride).
 '40 oz. Dream 'is a song by the American pop punk band Good Charlotte.
Religions
 The Bible uses 40 to denote completion.
 There are many references to '40 days and 40 nights' throughout the Bible. The most notable are the 40 days and nights of rain that caused Noah's flood.
 Jesus fasted for 40 days in the desert before being tempted by Satan.
 Jesus remained on earth for 40 days after his resurrection, appearing to the apostles and teaching them, before ascending to heaven.
 It represents a generation, and times of testing in the Bible. It rained for 40 days during the Flood. Moses spent 40 years in the desert, as did the children of Israel.
Science
 Zirconium is the chemical element in the periodic table that has the symbol Zr and atomic number 40.
Sports
 The best athletes to wear number 40
Gale Sayers, NFL; Shawn Kemp, NBA; Rick Sutcliffe, MLB
Please write us
If you know something interesting about the number 40 or any natural number (positive integer), please write to us.Number 40 in other languages
How to say or write the number forty in Spanish, German, French and other languages.
Spanish:  🔊 (número 40)  cuarenta 
German:  🔊 (Anzahl 40)  vierzig 
French:  🔊 (nombre 40)  quarante 
Portuguese:  🔊 (número 40)  quarenta 
Chinese:  🔊 (数 40)  四十 
Other languages ... 
News to email
Comment
If you know something interesting about the number 40 or any
natural number (positive integer).
For this topic there are no comments.
Legal Notices & Terms of Use
The content of the comments is the opinion of the users not of number.academy. It is not allowed to pour comments contrary to the laws, insulting, illicit or harmful to third parties. Number.academy reserves the right to remove or not make public any inappropriate comment. It also reserves the right to post a comment on another topic. Privacy Policy.
The content of the comments is the opinion of the users not of number.academy. It is not allowed to pour comments contrary to the laws, insulting, illicit or harmful to third parties. Number.academy reserves the right to remove or not make public any inappropriate comment. It also reserves the right to post a comment on another topic. Privacy Policy.
For this topic there are no comments.
Number 40 in News
BBC: 'We spent 40 days in a cave without sunlight or watches' The Deep Time study aims to see how humans can adapt to isolation and losing their sense of time. ... May 3, 2021

BBC: Myanmar coup: More than 40 children killed by military, rights group says Save the Children tells of a "nightmare situation", with the youngest victim just seven years old. ... April 1, 2021

NyTimes: More than 40 states say they will meet or beat Biden’s May 1 deadline for vaccine eligibility for all adults. The push to get Americans vaccinated has picked up momentum in recent days. ... March 24, 2021

NyTimes: The Louvre Recovers Armor Pieces Stolen Nearly 40 Years Ago At the end of May 1983, two pieces of Italian Renaissance armor went missing. The circumstances around their disappearance still remain a mystery. ... March 6, 2021
