998

998 is an even composite number composed of two prime numbers multiplied together.

What does the number 998 look like?

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

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

Prime factorization of 998:

2 × 499

See below for interesting mathematical facts about the number 998 from the Numbermatics database.


Names of 998

  • Cardinal: 998 can be written as Nine hundred ninety-eight.

Scientific notation

  • Scientific notation: 9.98 × 102

Factors of 998

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 501

Divisors of 998

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1500
  • Sum of proper divisors (its aliquot sum) s(n): 502
  • 998 is a deficient number, because the sum of its proper divisors (502) is less than itself. Its deficiency is 496

Bases of 998

  • Binary: 11111001102
  • Hexadecimal: 0x3E6
  • Base-36: RQ

Squares and roots of 998

  • 998 squared (9982) is 996004
  • 998 cubed (9983) is 994011992
  • The square root of 998 is 31.5911379981
  • The cube root of 998 is 9.9933288839

Scales and comparisons

How big is 998?
  • 998 seconds is equal to 16 minutes, 38 seconds.
  • To count from 1 to 998 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 998 cubic inches would be around 0.8 feet tall.

Recreational maths with 998

  • 998 backwards is 899
  • The number of decimal digits it has is: 3
  • The sum of 998's digits is 26
  • More coming soon!

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"Number 998 - Facts about the integer". Numbermatics.com. 2022. Web. 20 January 2022.

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The information we have on file for 998 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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