List of Numbers
Previous: 8
Next: 10
Contact Us
| |
Properties of the Number 9
- Because 9 is not divisible by 2 ...
- 9 is an odd number
- 9 has parity 1
- 9 is not an even number
- Because 9 can be factored as 3 x 3 ...
- 9 is a composite number
- 9 is not a prime number
Alternative Representations of the Number 9
- Base 2 (binary): 1001
- Base 8 (octal): 11
- Base 16 (hexadecimal): 9
Divisors of the Number 9
- 9 has 3 positive divisors:
1, 3, 9
- The sum of the positive divisors is 13
- 9 has 2 proper divisors:
1, 3
- The sum of the proper divisors is 4
- 9 is a deficient number since the sum of the proper divisors is less than 9
- 9 is not a perfect number
- 9 is not an abundant number
More Properties of the Number 9
- 9 is a square number (i.e., square of the natural number 3)
- 9 is not a cube number
- 9 is a palindromic number (i.e., the digits are the same forwards and backwards)
- 9 is not a Fibonacci number
- 9 is not a Lucas number
|