Number 9
Number 9 spell 🔊, write in words: nine . Ordinal number 9th is said 🔊 and write: ninth. The meaning of number 9 in Maths: Is Prime? Factorization and dividers. The square root and cube root of 9. The meaning in computer science, numerology, codes and images, writing and naming in other languages, other interesting facts.
Useful information about number 9
The decimal (Arabic) number 9 converted to a Roman number is IX.
Roman and decimal number conversions.
9 kilograms (kg) = 19.8 pounds (lb)
9 pounds (lb) = 4.1 kilograms (kg)
9 kilometers (km) equals to 5.592 miles (mi).
9 miles (mi) equals to 14.484 kilometers (km).
9 meters (m) equals to 14.484 feet (ft).
9 feet (ft) equals 2.743 meters (m).
9 centimeters (cm) equals to 3.5 inches (in).
9 inches (in) equals to 22.9 centimeters (cm).
9° Fahrenheit (°F) equals to 12.8° Celsius (°C)
9° Celsius (°C) equals to 48.2° Fahrenheit (°F)
9 Horsepower (hp) equals to 6.62 kilowatts (kW)
9 kilowatts (kW) equals to 12.24 horsepower (hp)
The number 9 converted to a Mayan number is  
Decimal and Mayan number conversions. 
Weight conversion
9 kilograms (kg) = 19.8 pounds (lb)
9 pounds (lb) = 4.1 kilograms (kg)
Length conversion
9 kilometers (km) equals to 5.592 miles (mi).
9 miles (mi) equals to 14.484 kilometers (km).
9 meters (m) equals to 14.484 feet (ft).
9 feet (ft) equals 2.743 meters (m).
9 centimeters (cm) equals to 3.5 inches (in).
9 inches (in) equals to 22.9 centimeters (cm).
Temperature conversion
9° Fahrenheit (°F) equals to 12.8° Celsius (°C)
9° Celsius (°C) equals to 48.2° Fahrenheit (°F)
Power conversion
9 Horsepower (hp) equals to 6.62 kilowatts (kW)
9 kilowatts (kW) equals to 12.24 horsepower (hp)
Codes and images of the number 9
Number 9 morse code: .Sign language for number 9:
Images of the number  
Image (1) of the number  Image (2) of the number 
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Number 9 infographic.

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Photo of number 9
Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)
Gregorian year 9 is Buddhist year 552.Buddhist year 9 is Gregorian year 534 a. C.
Gregorian year 9 is Islamic year 632 or 631.
Islamic year 9 is Gregorian year 630 or 631.
Gregorian year 9 is Persian year 614 or 613.
Persian year 9 is Gregorian 630 or 631.
Gregorian year 9 is Hebrew year 3769 or 3770.
Hebrew year 9 is Gregorian year 3751 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. 9
Multiplications
Multiplication table of 9
9 multiplied by two equals 18 (9 x 2 = 18).
9 multiplied by three equals 27 (9 x 3 = 27).
9 multiplied by four equals 36 (9 x 4 = 36).
9 multiplied by five equals 45 (9 x 5 = 45).
9 multiplied by six equals 54 (9 x 6 = 54).
9 multiplied by seven equals 63 (9 x 7 = 63).
9 multiplied by eight equals 72 (9 x 8 = 72).
9 multiplied by nine equals 81 (9 x 9 = 81).
show multiplications by 6, 7, 8, 9 ...
9 multiplied by seven equals 63 (9 x 7 = 63).
9 multiplied by eight equals 72 (9 x 8 = 72).
9 multiplied by nine equals 81 (9 x 9 = 81).
Fractions: decimal fraction and common fraction
Fraction table of 9
Half of 9 is 4,5 (9 / 2 = 4,5 = 4 1/2).
One third of 9 is 3 (9 / 3 = 3).
One quarter of 9 is 2,25 (9 / 4 = 2,25 = 2 1/4).
One fifth of 9 is 1,8 (9 / 5 = 1,8 = 1 4/5).
One sixth of 9 is 1,5 (9 / 6 = 1,5 = 1 1/2).
One seventh of 9 is 1,2857 (9 / 7 = 1,2857 = 1 2/7).
One eighth of 9 is 1,125 (9 / 8 = 1,125 = 1 1/8).
One ninth of 9 is 1 (9 / 9 = 1).
show fractions by 6, 7, 8, 9 ...
One seventh of 9 is 1,2857 (9 / 7 = 1,2857 = 1 2/7).
One eighth of 9 is 1,125 (9 / 8 = 1,125 = 1 1/8).
One ninth of 9 is 1 (9 / 9 = 1).
Calculator
9  
Advanced math operations
Is Prime?
The number 9 is not a prime number. The closest prime numbers are 7, 11.
9th prime number in order is 23.
Factorization and dividers
Factorization 3 * 3 = 9
Divisors of number 9 are 1 , 3 , 9
Total Divisors 3.
Sum of Divisors 13.
Powers
The second power of 9^{2} is 81.
The third power of 9^{3} is 729.
Roots
The square root √9 is 3 raíz cuadrada exacta.
The cube root of ^{3}√9 is 2,080084.
Logarithms
The natural logarithm of No. ln 9 = log_{e} 9 = 2,197225.
The logarithm to base 10 of No. log_{10} 9 = 0,954243.
The Napierian logarithm of No. log_{1/e} 9 = 2,197225.
Trigonometric functions
The cosine of 9 is 0,91113.The sine of 9 is 0,412118.
The tangent of 9 is 0,452316.
Properties of the number 9
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 9 in Computer Science
Code type  Code value 

Port 9/TCP, UDP  DISCARD protocol 
Unix time  Unix time 9 is equal to Thursday Jan. 1, 1970, 12:09 a.m. GMT 
IPv4, IPv6  Number 9 internet address in dotted format v4 0.0.0.9, v6 ::9 
9 Decimal  = 1001 Binary 
9 Decimal  = 100 Ternary 
9 Decimal  = 11 Octal 
9 Decimal  = 9 Hexadecimal (0x9 hex) 
9 BASE64  OQ== 
9 MD5  45c48cce2e2d7fbdea1afc51c7c6ad26 
9 SHA1  0ade7c2cf97f75d009975f4d720d1fa6c19f4897 
9 SHA224  192f56eb9bd894a72b30c303247b107be2c4591f310dd69a67927f48 
9 SHA256  19581e27de7ced00ff1ce50b2047e7a567c76b1cbaebabe5ef03f7c3017bb5b7 
9 SHA384  de6c23dc90b9221fe0150f8a68ec733b796edddca14b69d2fff8f472a4ec797f416319202533dcbdef69a4ee654fab8d 
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Numerology 9
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.
The number 9 (nine) must discover its inner quality and develop the nobility of the soul. It is the experience of all the previous integrated energies. If you are a nine (9), you came to manifest integrity and wisdom in the world. But first you need to find high principles for yourself, your life purpose. There are two such personalities: pessimists or eternal optimists.
Tolerance, hope, physical and spiritual freedom to open ourselves to other worlds and thoughts, also define the meaning of the number 9 (nine). This number is totally independent and with an optimistic approach towards life. Number 9 personality is also intuitive, unbiased and sincere. It is the sign of the humanitarian sense, with a tendency to romance and to everything emotionally sentimental. He/she is also lively friendly and personable, selfless, interested in doing his/her job willingly and well. Number 9 person has artistic and writing talent. It is the number of persistence, generosity and capacity for drive. There people have a tendency to forgive the mistakes of others. They are able to start some projects and work persistently to completion. Personality 9 is distinguished by its interesting ability to give quick and brilliant answers. Read more ...
Interesting facts about the number 9
Areas, mountains and surfaces
 The total area of Great Britain is 80,823 square miles (209,331 square km). Country United Kingdom (England, Scotland and Wales). 9th largest island in the world.
Astrology
 It is one of the lucky numbers for the zodiac sign Leo and Sagittarius.
 What is astrology and what is it for?
Astronomy and space
 (9) Metis is asteroid number 9. Was discovered by A. Graham from Observatorio Markree, 4/25/1848.
 The Falcon 9 is a twostage rocket powered by densified liquid oxygen (LOX) and rocket kerosene (RP1), manufactured by SpaceX. Its current version, the Falcon 9 Full Thrust, has a payload of 22,800 kg in low Earth orbit and 8,300 kg in geosynchronous transfer orbit. The first stage is capable of landing to be reused, either returning to land or on a barge.
Games
 Pokémon Blastoise (Kamekkusu, Kamex) is a Pokémon number # 009 of the National Pokédex. Blastoise is a watertype Pokémon in the first generation. It is a Pokémon from the Monster Egg and Water 1 group. Blastoise's other indexes are Johto index 234 , Kalos Centro index 088  Central Zone Pokédex.
Mathematics
 9 is the maximum number of cubes that are needed to sum to any positive integer.
Music
 Nine Inch Nails (abbreviated NIN and stylized NIИ) is an American industrial rock band founded in 1988 by Trent Reznor in Cleveland, Ohio, United States. Although fans claim that the name is in reference to the length of the nails used in the crucifixion of Jesus Christ or the inches of Freddy Krueger's nails, Trent Reznor has said that he chose the name "because it was easy to abbreviate."
 '9 Crimes', in Spanish '9 crimes', is the first single from Damien Rice's album 9.
 '9mm' (clean version titled 'Speaker') is the first single from David Banner's fifth album, The Greatest Story Ever Told.
 '9 Piece', in Spanish '9 Pieces', is a song by American rapper Rick Ross.
 '9 Shots', in Spanish '9 shots', is a song by the American hip hop recording artist 50 Cent.
 '9' is a song by Canadian rapper and singer Drake.
 '9 Lives', in Spanish '9 Lives', is a song recorded by Romanian recording artist Alexandra Stan.
Science
 Fluorine is the chemical element in the periodic table that has the symbol F and atomic number 9.
Sports
 The best athletes to wear number 9
Ted Williams, MLB; Gordie Howe, NHL; Bob Pettit, NBA; Bill Elliott, NASCAR; Rocket Richard, NHL; Bobby Hull, NHL; Drew Brees, NFL; Roger Maris, MLB
Superstitions
 The number 9 in Japan is pronounced "ku" which coincides with "suffering" and is considered disastrous for the same.
Tv, movies and cinematography
 Movie: 9 Days (Bad Company) Year: 2002 Length: 116 Director: Joel Schumacher With: Anthony Hopkins; Chris Rock
Weapons
 The 9 × 19 mm Parabellum (abbreviated as 9 mm), is a cartridge for pistols, submachine guns and carbines designed by Georg Luger and introduced in 1902, for his semiautomatic Parabellum pistol.
Please write us
If you know something interesting about the number 9 or any natural number (positive integer), please write to us.Number 9 in other languages
How to say or write the number nine in Spanish, German, French and other languages.
Spanish:  🔊 (número 9)  nueve 
German:  🔊 (Anzahl 9)  neun 
French:  🔊 (nombre 9)  neuf 
Portuguese:  🔊 (número 9)  nove 
Chinese:  🔊 (数 9)  九 
Arabian:  🔊 (عدد 9)  تسعة 
Czech:  🔊 (číslo 9)  devět 
Korean:  🔊 (번호 9)  구 
Danish:  🔊 (nummer 9)  ni 
Hebrew:  (מספר 9)  תשע 
Dutch:  🔊 (nummer 9)  negen 
Japanese:  🔊 (数 9)  九 
Indonesian:  🔊 (jumlah 9)  sembilan 
Italian:  🔊 (numero 9)  nove 
Norwegian:  🔊 (nummer 9)  ni 
Polish:  🔊 (liczba 9)  dziewięć 
Russian:  🔊 (номер 9)  девять 
Turkish:  🔊 (numara 9)  dokuz 
Thai:  🔊 (จำนวน 9)  เก้า 
Ukrainian:  🔊 (номер 9)  дев'ять 
Vietnamese:  🔊 (con số 9)  chín 
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