13,921 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 13921 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

13921 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 13921:


See below for interesting mathematical facts about the number 13921 from the Numbermatics database.

Names of 13921

  • Cardinal: 13921 can be written as Thirteen thousand, nine hundred twenty-one.

Scientific notation

  • Scientific notation: 1.3921 × 104

Factors of 13921

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 13921

Divisors of 13921

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 13922
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 13921 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 13920

Bases of 13921

  • Binary: 110110011000012
  • Hexadecimal: 0x3661
  • Base-36: AQP

Squares and roots of 13921

  • 13921 squared (139212) is 193794241
  • 13921 cubed (139213) is 2697809628961
  • The square root of 13921 is 117.9872874509
  • The cube root of 13921 is 24.0560034747

Scales and comparisons

How big is 13921?
  • 13,921 seconds is equal to 3 hours, 52 minutes, 1 second.
  • To count from 1 to 13,921 would take you about three hours.

    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 13921 cubic inches would be around 2 feet tall.

Recreational maths with 13921

  • 13921 backwards is 12931
  • The number of decimal digits it has is: 5
  • The sum of 13921's digits is 16
  • More coming soon!

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"Number 13921 - Facts about the integer". Numbermatics.com. 2023. Web. 5 December 2023.

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Numbermatics. (2023). Number 13921 - Facts about the integer. Retrieved 5 December 2023, from https://numbermatics.com/n/13921/

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Numbermatics. 2023. "Number 13921 - Facts about the integer". https://numbermatics.com/n/13921/

The information we have on file for 13921 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!

Keywords: Divisors of 13921, math, Factors of 13921, curriculum, school, college, exams, university, Prime factorization of 13921, STEM, science, technology, engineering, physics, economics, calculator, thirteen thousand, nine hundred twenty-one.

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