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Number 9: mathematical and symbolic properties | Crazy Numbers

Discover a lot of information on the number 9: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Numerology and symbolism of the number 9

The number 9 (nine) represents humanity, altruism. It symbolizes generosity, idealism and humanitarian vocations.

## Mathematical properties of 9

Is 9 a prime number? No
Is 9 a perfect number? No
Number of divisors 3
List of dividers
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1, 3, 9
Sum of divisors 13
Prime factorization 32
Prime factors
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3

## How to write / spell 9 in letters?

In letters, the number 9 is written as: Nine. And in other languages? how does it spell?

9 in other languages
Write 9 in english Nine
Write 9 in french Neuf
Write 9 in spanish Nueve
Write 9 in portuguese Nove

Other ways to write 9
In letter Nine
In roman numeral
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IX
In binary 1001
In octal 11