139 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 139 look like?

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

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

Prime factorization of 139:


See below for interesting mathematical facts about the number 139 from the Numbermatics database.

Names of 139

  • Cardinal: 139 can be written as One hundred thirty-nine.

Scientific notation

  • Scientific notation: 1.39 × 102

Factors of 139

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 139

Divisors of 139

  • Number of divisors d(n): 2
  • Complete list of divisors:
    1 139
  • Sum of all divisors σ(n): 140
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 139 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 138

Bases of 139

  • Binary: 100010112
  • Hexadecimal: 0x8B
  • Base-36: 3V

Squares and roots of 139

  • 139 squared (1392) is 19321
  • 139 cubed (1393) is 2685619
  • The square root of 139 is 11.7898261225
  • The cube root of 139 is 5.1801014675

Scales and comparisons

How big is 139?
  • 139 seconds is equal to 2 minutes, 19 seconds.
  • To count from 1 to 139 would take you about nine seconds.

    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 139 cubic inches would be around 0.4 feet tall.

Recreational maths with 139

  • 139 backwards is 931
  • The number of decimal digits it has is: 3
  • The sum of 139's digits is 13
  • More coming soon!

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"Number 139 - Facts about the integer". Numbermatics.com. 2024. Web. 22 July 2024.

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Numbermatics. (2024). Number 139 - Facts about the integer. Retrieved 22 July 2024, from https://numbermatics.com/n/139/

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Numbermatics. 2024. "Number 139 - Facts about the integer". https://numbermatics.com/n/139/

The information we have on file for 139 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 139, math, Factors of 139, curriculum, school, college, exams, university, Prime factorization of 139, STEM, science, technology, engineering, physics, economics, calculator, one hundred thirty-nine.

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