Number 9

Number 9 is said 🔊, write in letters as follows: nine . Ordinal number 9th is said 🔊 and write: ninth. The meaning of number 9: Basic maths, advanced mathematics and properties, computer science, numerology, codes and images, writing and naming in other languages, other interesting facts and comments.

Useful information about number 9

The decimal (Arabic) number 9 converted to a Roman number is IX. Roman and decimal number conversions.
The number 9 converted to a Mayan number is mayan number 9
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 48.2° Celsius (°C)
9° Celsius (°C) equals to -12.8° 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: Sign language for number 9
Images of the number
Image (1) of the numberImage (2) of the number
Number 9 black image Number 9 red image
There is no copyright for these images. Number 9 infographic.
More images, other sizes, codes and colors ...

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


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).
show multiplications by 6, 7, 8, 9 ...

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).
show fractions by 6, 7, 8, 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.


The second power of 92 is 81.
The third power of 93 is 729.


The square root √9 is 3 raíz cuadrada exacta.
The cube root of 39 is 2,080084.


The natural logarithm of No. ln 9 = loge 9 = 2,197225.
The logarithm to base 10 of No. log10 9 = 0,954243.
The Napierian logarithm of No. log1/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: No
Is 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 typeCode value
Port 9/TCP, UDPDISCARD protocol
Unix timeUnix time 9 is equal to Thursday Jan. 1, 1970, 12:09 a.m. GMT
IPv4, IPv6Number 9 internet address in dotted format v4, v6 ::9
9 Decimal = 1001 Binary
9 Decimal = 100 Ternary
9 Decimal = 11 Octal
9 Decimal = 9 Hexadecimal (0x9 hex)
9 BASE64OQ==
9 MD545c48cce2e2d7fbdea1afc51c7c6ad26
9 SHA10ade7c2cf97f75d009975f4d720d1fa6c19f4897
More SHA codes related to the number 9 ...

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.

On the negative side: self-flattery, need to lie, scattered interests, possessive, careless with finances, need to get attention. He/she is usually arrogant and impulsive, lacks patience, wants everything right now, and if possible, without any effort.

The number 9 (nine) teaches us to live with serenity, acceptance, tolerance and spiritual openness. This altruistic number invites us to open this consciousness in the service of others. It is also the number of The inner Realization .

Compatibilities of 9 (nine):
The 9 is compatible with the 9: compatibility with those of the same number.
The 9 is compatible with the 1: alliance for projects and ideas.

In the Tarot, The Hermit, Arcanum number 9, represents wisdom and the sense of the essential. It is the opening of the path to other spaces of thought, more universal, crossing borders, taking thought to a mystical and spiritual place.

The letters I and R are the containers for the meaning of the number 9 (nine).


This number signifies the end of a cycle. In general it is a positive number, because it indicates that you have finished something and you're ready to start a new project. It indicates that you must understand that nothing is forever and lose the fear of change.

Each number, from 1 to 9, has its positive and negative characteristics, its talents, challenges or what you have to overcome to reach your true way of loving and feeling loved and accepted as you really are. It also provides guidelines for self-knowledge. The numerologist Leonardo Apelbaum says that personal numbers only give us general information because each person deserves a complete study to decipher the numbers that block or delay. The matter is not so simple. Let us know if the description matches your personality.

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.


Astronomy and space

  • (9) Metis es el asteroide número 9. Fue descubierto por A. Graham desde Observatorio Markree, el 4/25/1848.
  • The Falcon 9 is a two-stage rocket powered by densified liquid oxygen (LOX) and rocket kerosene (RP-1), 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.


  • 9 is the maximum number of cubes that are needed to sum to any positive integer.


  • 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.


  • Fluorine is the chemical element in the periodic table that has the symbol F and atomic number 9.


  • 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


  • 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


  • 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 semi-automatic Parabellum pistol.

Number 9 in other languages

How to say or write the number nine in Spanish, German, French and other languages.
Spanish: 🔊 (número 9)


German: 🔊 (Anzahl 9)


French: 🔊 (nombre 9)


Portuguese: 🔊 (número 9)


Chinese: 🔊 (数 9)

Other languages ...

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