999
Number 999: Properties, Factors, and Mathematical Facts
Short answer
The number 999 is an odd composite number with 8 positive divisors. Its prime factorization is 3³ × 37. It is also a deficient number and a decimal palindrome, which gives it several notable mathematical relationships.
Is 999 prime?
ClassificationCompositeParityOddDivisor count8AbundanceDeficient
What is the prime factorization of 999?
Prime factorization
3 cubed times 37
What are the divisors of 999?
Divisor count
8
Divisor sum
1,520
Proper divisor sum
521
- 1
- 3
- 9
- 27
- 37
- 111
- 333
- 999
How is 999 classified?
How is 999 represented in other numeral systems?
Decimal
999
Binary
1111100111
Octal
1747
Hexadecimal
3E7
Roman
CMXCIXLearn more →
In words
nine hundred ninety nine
Roots and powers
Square root
31.606961 Approximate
Cube root
9.996666 Approximate
Nearest lower square
961
Nearest higher square
1024
Nearest lower cube
729
Nearest higher cube
1000
What are the digit properties of 999?
Which numbers are related to 999?
Why these results are true
- 999 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 999
- Is 999 prime?
- No
- What is the prime factorization of 999?
- 3³ × 37
- Is 999 a perfect square?
- No
- What is 999 in binary?
- 1111100111
- What is 999 in Roman numerals?
- CMXCIX