Number 90
Number 90 spell 🔊, write in words: ninety . Ordinal number 90th is said 🔊 and write: ninetieth. Phone prefix +90 or 0090. The meaning of number 90 in Maths: Is Prime? Factorization and dividers. The square root and cube root of 90. The meaning in computer science, numerology, codes and images, writing and naming in other languages, other interesting facts, news.
Useful information about number 90
The decimal (Arabic) number 90 converted to a Roman number is XC.
Roman and decimal number conversions.
90 kilograms (kg) = 198.4 pounds (lb)
90 pounds (lb) = 40.8 kilograms (kg)
90 kilometers (km) equals to 55.923 miles (mi).
90 miles (mi) equals to 144.841 kilometers (km).
90 meters (m) equals to 144.841 feet (ft).
90 feet (ft) equals 27.432 meters (m).
90 centimeters (cm) equals to 35.4 inches (in).
90 inches (in) equals to 228.6 centimeters (cm).
90° Fahrenheit (°F) equals to 32.2° Celsius (°C)
90° Celsius (°C) equals to 194° Fahrenheit (°F)
90 Horsepower (hp) equals to 66.19 kilowatts (kW)
90 kilowatts (kW) equals to 122.38 horsepower (hp)
90 seconds equals to 1 minute, 30 seconds
90 minutes equals to 1 hour, 30 minutes
The number 90 converted to a Mayan number is  
Decimal and Mayan number conversions. 
Weight conversion
90 kilograms (kg) = 198.4 pounds (lb)
90 pounds (lb) = 40.8 kilograms (kg)
Length conversion
90 kilometers (km) equals to 55.923 miles (mi).
90 miles (mi) equals to 144.841 kilometers (km).
90 meters (m) equals to 144.841 feet (ft).
90 feet (ft) equals 27.432 meters (m).
90 centimeters (cm) equals to 35.4 inches (in).
90 inches (in) equals to 228.6 centimeters (cm).
Temperature conversion
90° Fahrenheit (°F) equals to 32.2° Celsius (°C)
90° Celsius (°C) equals to 194° Fahrenheit (°F)
Power conversion
90 Horsepower (hp) equals to 66.19 kilowatts (kW)
90 kilowatts (kW) equals to 122.38 horsepower (hp)
Time conversion
(hours, minutes, seconds, days, weeks)90 seconds equals to 1 minute, 30 seconds
90 minutes equals to 1 hour, 30 minutes
Codes and images of the number 90
Number 90 morse code: . Sign language for number 90:
Images of the number  
Image (1) of the number  Image (2) of the number 
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Number 90 infographic.

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Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)
Gregorian year 90 is Buddhist year 633.Buddhist year 90 is Gregorian year 453 a. C.
Gregorian year 90 is Islamic year 548 or 547.
Islamic year 90 is Gregorian year 708 or 709.
Gregorian year 90 is Persian year 533 or 532.
Persian year 90 is Gregorian 711 or 712.
Gregorian year 90 is Hebrew year 3850 or 3851.
Hebrew year 90 is Gregorian year 3670 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is official in Iran and Afghanistan.
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Mathematics of no. 90
Multiplications
Multiplication table of 90
90 multiplied by two equals 180 (90 x 2 = 180).
90 multiplied by three equals 270 (90 x 3 = 270).
90 multiplied by four equals 360 (90 x 4 = 360).
90 multiplied by five equals 450 (90 x 5 = 450).
90 multiplied by six equals 540 (90 x 6 = 540).
90 multiplied by seven equals 630 (90 x 7 = 630).
90 multiplied by eight equals 720 (90 x 8 = 720).
90 multiplied by nine equals 810 (90 x 9 = 810).
show multiplications by 6, 7, 8, 9 ...
90 multiplied by seven equals 630 (90 x 7 = 630).
90 multiplied by eight equals 720 (90 x 8 = 720).
90 multiplied by nine equals 810 (90 x 9 = 810).
Fractions: decimal fraction and common fraction
Fraction table of 90
Half of 90 is 45 (90 / 2 = 45).
One third of 90 is 30 (90 / 3 = 30).
One quarter of 90 is 22,5 (90 / 4 = 22,5 = 22 1/2).
One fifth of 90 is 18 (90 / 5 = 18).
One sixth of 90 is 15 (90 / 6 = 15).
One seventh of 90 is 12,8571 (90 / 7 = 12,8571 = 12 6/7).
One eighth of 90 is 11,25 (90 / 8 = 11,25 = 11 1/4).
One ninth of 90 is 10 (90 / 9 = 10).
show fractions by 6, 7, 8, 9 ...
One seventh of 90 is 12,8571 (90 / 7 = 12,8571 = 12 6/7).
One eighth of 90 is 11,25 (90 / 8 = 11,25 = 11 1/4).
One ninth of 90 is 10 (90 / 9 = 10).
Calculator
90  
Advanced math operations
Is Prime?
The number 90 is not a prime number. The closest prime numbers are 89, 97.
90th prime number in order is 463.
Factorization and dividers
Factorization 2 * 3 * 3 * 5 = 90
Divisors of number 90 are 1 , 2 , 3 , 5 , 6 , 9 , 10 , 15 , 18 , 30 , 45 , 90
Total Divisors 12.
Sum of Divisors 234.
Powers
The second power of 90^{2} is 8.100.
The third power of 90^{3} is 729.000.
Roots
The square root √90 is 9,486833.
The cube root of ^{3}√90 is 4,481405.
Logarithms
The natural logarithm of No. ln 90 = log_{e} 90 = 4,49981.
The logarithm to base 10 of No. log_{10} 90 = 1,954243.
The Napierian logarithm of No. log_{1/e} 90 = 4,49981.
Trigonometric functions
The cosine of 90 is 0,448074.The sine of 90 is 0,893997.
The tangent of 90 is 1,9952.
Properties of the number 90
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 90 in Computer Science
Code type  Code value 

Ascii  90 ascii is character Z 
Unix time  Unix time 90 is equal to Thursday Jan. 1, 1970, 12:01:30 a.m. GMT 
IPv4, IPv6  Number 90 internet address in dotted format v4 0.0.0.90, v6 ::5a 
90 Decimal  = 1011010 Binary 
90 Decimal  = 10100 Ternary 
90 Decimal  = 132 Octal 
90 Decimal  = 5A Hexadecimal (0x5a hex) 
90 BASE64  OTA= 
90 MD5  8613985ec49eb8f757ae6439e879bb2a 
90 SHA1  2d0c8af807ef45ac17cafb2973d866ba8f38caa9 
90 SHA224  0b87e9b981e908da8e219ba02986f2287bbdc8ff4536a6f0eae60a99 
90 SHA256  69f59c273b6e669ac32a6dd5e1b2cb63333d8b004f9696447aee2d422ce63763 
90 SHA384  d291c644b083afbe9ad13394b722648ae4adbb276c2c8461c2f91b6ed41115254c2a470e7b1cd931d5a7965bbb624d65 
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Numerology 90
The meaning of the number 9 (nine), numerology 9
Character frequency 9: 1
The number 9 (nine) is the sign of ideals, Universal interest and the spirit of combat for humanitarian purposes. It symbolizes the inner Light, prioritizing ideals and dreams, experienced through emotions and intuition. It represents the ascension to a higher degree of consciousness and the ability to display love for others. He/she is creative, idealistic, original and caring.
More about the meaning of the number 9 (nine), numerology 9 ...
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 90
Asteroids
 (90) Antiope is asteroid number 90. It was discovered by K. T. R. Luther from DüsseldorfBilk Observatory on 10/1/1866.
Aircrafts and flights
 01/13/1982 the Air Florida plane, flight number 90, Boeing 737222 crashed in Washington, D.C., US 70 passengers and 4 crew members died.
Areas, mountains and surfaces
 The total area of Roosevelt Island is 3,050 square miles (7,910 square km). Country None (Antarctic territorial claim by New Zealand). 90th largest island in the world.
Distances between cities
 There is a 90 miles (144 km) direct distance between Anyang (China) and Kaifeng (China).
 There is a 90 miles (144 km) direct distance between Barquisimeto (Venezuela) and Valencia (Venezuela).
 There is a 90 miles (144 km) direct distance between Guankou (China) and Yueyang (China).
 There is a 90 miles (144 km) direct distance between Chongqing (China) and Nanchong (China).
 There is a 90 miles (144 km) direct distance between Peshawar (Pakistan) and Rawalpindi (Pakistan).
Games
Mathematics
 90 is the number of degrees in a right angle.
Mobile and telephony
 Number 90 or +90 or 0090 is a dial the international call prefix for Turkey. (00/+) is dial the international call prefix.
Music
 '90's Girl' is a song by BlackGirl, released in 1994.
Science
 Thorium is the chemical element in the periodic table that has the symbol Th and atomic number 90.
Sports
 The best athletes to wear number 90
Neil Smith, NFL; Jevon Kearse, NFL
Tv, movies and cinematography
 Film: 90 miles (90 miles) Year: 2005 Duration: 110 Director: Francisco Rodríguez With: Alexis Valdés; Claudia Rojas
Please write us
If you know something interesting about the number 90 or any natural number (positive integer), please write to us.Number 90 in other languages
How to say or write the number ninety in Spanish, German, French and other languages.
Spanish:  🔊 (número 90)  noventa 
German:  🔊 (Anzahl 90)  neunzig 
French:  🔊 (nombre 90)  quatrevingtdix 
Portuguese:  🔊 (número 90)  noventa 
Chinese:  🔊 (数 90)  九十 
Arabian:  🔊 (عدد 90)  تسعون 
Czech:  🔊 (číslo 90)  devadesát 
Korean:  🔊 (번호 90)  구십 
Danish:  🔊 (nummer 90)  halvfems 
Hebrew:  (מספר 90)  תשעים 
Dutch:  🔊 (nummer 90)  negentig 
Japanese:  🔊 (数 90)  九十 
Indonesian:  🔊 (jumlah 90)  sembilan puluh 
Italian:  🔊 (numero 90)  novanta 
Norwegian:  🔊 (nummer 90)  nitti 
Polish:  🔊 (liczba 90)  dziewięćdzisiąt 
Russian:  🔊 (номер 90)  девяносто 
Turkish:  🔊 (numara 90)  doksan 
Thai:  🔊 (จำนวน 90)  เก้าสิบ 
Ukrainian:  🔊 (номер 90)  дев'яносто 
Vietnamese:  🔊 (con số 90)  chín mươi 
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Number 90 in News
The Sydney Morning Herald: Tragic story brings home extent of our failure in Afghanistan
With the collapse of Kabul imminent, a senior Afghani woman reached out to the Australian government for help to save 90 of her staff. She received no response. Sept. 6, 2021 
BBC: Covid: Woman aged 90 died with double variant infection
Simultaneous infections are rare but can happen, particularly in people yet to be vaccinated, warn experts. July 10, 2021 
France24: Fighting between Yemeni loyalists, Houthi rebels kills 90 in two days
Fighting between Yemeni loyalists and Huthi rebels seeking to take the strategic northern city of Marib has killed 90 fighters in two days, progovernment military sources said Tuesday. June 23, 2021 
The Sydney Morning Herald: Novavax COVID19 shot shows 90 per cent efficacy, large study finds
The Australian government has ordered 51 million doses of Novavax’s product, which is easy to store and transport. June 14, 2021 