987
Number 987: Properties, Factors, and Mathematical Facts
Short answer
The number 987 is an odd composite number with 8 positive divisors. Its prime factorization is 3 × 7 × 47. It is also a deficient number and a Fibonacci number, which gives it several notable mathematical relationships.
Is 987 prime?
ClassificationCompositeParityOddDivisor count8AbundanceDeficient
What is the prime factorization of 987?
Prime factorization
3 times 7 times 47
What are the divisors of 987?
Divisor count
8
Divisor sum
1,536
Proper divisor sum
549
- 1
- 3
- 7
- 21
- 47
- 141
- 329
- 987
How is 987 classified?
Prime
CompositeLearn more →
Perfect square
No
Perfect cube
No
Fibonacci
YesLearn more →
Triangular
No
Power of two
No
How is 987 represented in other numeral systems?
Decimal
987
Binary
1111011011
Octal
1733
Hexadecimal
3DB
Roman
CMLXXXVIILearn more →
In words
nine hundred eighty seven
Roots and powers
Square root
31.416556 Approximate
Cube root
9.956478 Approximate
Nearest lower square
961
Nearest higher square
1024
Nearest lower cube
729
Nearest higher cube
1000
Sequence position
Fibonacci
Index: 16
What are the digit properties of 987?
Which numbers are related to 987?
Why these results are true
- 987 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 987
- Is 987 prime?
- No
- What is the prime factorization of 987?
- 3 × 7 × 47
- Is 987 a perfect square?
- No
- What is 987 in binary?
- 1111011011
- What is 987 in Roman numerals?
- CMLXXXVII