138409

138,409 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138409 look like?

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

138409 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 138409:

61 × 2269

See below for interesting mathematical facts about the number 138409 from the Numbermatics database.


Names of 138409

  • Cardinal: 138409 can be written as One hundred thirty-eight thousand, four hundred nine.

Scientific notation

  • Scientific notation: 1.38409 × 105

Factors of 138409

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 2330

Divisors of 138409

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 140740
  • Sum of proper divisors (its aliquot sum) s(n): 2331
  • 138409 is a deficient number, because the sum of its proper divisors (2331) is less than itself. Its deficiency is 136078

Bases of 138409

  • Binary: 1000011100101010012
  • Hexadecimal: 0x21CA9
  • Base-36: 2YSP

Squares and roots of 138409

  • 138409 squared (1384092) is 19157051281
  • 138409 cubed (1384093) is 2651508310751929
  • The square root of 138409 is 372.0336006331
  • The cube root of 138409 is 51.7274945511

Scales and comparisons

How big is 138409?
  • 138,409 seconds is equal to 1 day, 14 hours, 26 minutes, 49 seconds.
  • To count from 1 to 138,409 would take you about fourteen 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 138409 cubic inches would be around 4.3 feet tall.

Recreational maths with 138409

  • 138409 backwards is 904831
  • The number of decimal digits it has is: 6
  • The sum of 138409's digits is 25
  • More coming soon!

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"Number 138409 - Facts about the integer". Numbermatics.com. 2024. Web. 28 March 2024.

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Numbermatics. (2024). Number 138409 - Facts about the integer. Retrieved 28 March 2024, from https://numbermatics.com/n/138409/

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Numbermatics. 2024. "Number 138409 - Facts about the integer". https://numbermatics.com/n/138409/

The information we have on file for 138409 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 138409, math, Factors of 138409, curriculum, school, college, exams, university, Prime factorization of 138409, STEM, science, technology, engineering, physics, economics, calculator, one hundred thirty-eight thousand, four hundred nine.

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