989

989 is an odd composite number composed of two prime numbers multiplied together.

What does the number 989 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

989 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 989:

23 × 43

See below for interesting mathematical facts about the number 989 from the Numbermatics database.


Names of 989

  • Cardinal: 989 can be written as Nine hundred eighty-nine.

Scientific notation

  • Scientific notation: 9.89 × 102

Factors of 989

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 66

Divisors of 989

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1056
  • Sum of proper divisors (its aliquot sum) s(n): 67
  • 989 is a deficient number, because the sum of its proper divisors (67) is less than itself. Its deficiency is 922

Bases of 989

  • Binary: 11110111012
  • Hexadecimal: 0x3DD
  • Base-36: RH

Squares and roots of 989

  • 989 squared (9892) is 978121
  • 989 cubed (9893) is 967361669
  • The square root of 989 is 31.4483703871
  • The cube root of 989 is 9.9631980613

Scales and comparisons

How big is 989?
  • 989 seconds is equal to 16 minutes, 29 seconds.
  • To count from 1 to 989 would take you about eight minutes.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 989 cubic inches would be around 0.8 feet tall.

Recreational maths with 989

  • 989 is the same when its digits are reversed! That makes it a palindromic number.
  • The number of decimal digits it has is: 3
  • The sum of 989's digits is 26
  • More coming soon!

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The information we have on file for 989 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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