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

What does the number 869 look like?

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

869 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 869:

11 × 79

See below for interesting mathematical facts about the number 869 from the Numbermatics database.

Names of 869

  • Cardinal: 869 can be written as Eight hundred sixty-nine.

Scientific notation

  • Scientific notation: 8.69 × 102

Factors of 869

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 90

Divisors of 869

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 960
  • Sum of proper divisors (its aliquot sum) s(n): 91
  • 869 is a deficient number, because the sum of its proper divisors (91) is less than itself. Its deficiency is 778

Bases of 869

  • Binary: 11011001012
  • Hexadecimal: 0x365
  • Base-36: O5

Squares and roots of 869

  • 869 squared (8692) is 755161
  • 869 cubed (8693) is 656234909
  • The square root of 869 is 29.4788059459
  • The cube root of 869 is 9.5427436815

Scales and comparisons

How big is 869?
  • 869 seconds is equal to 14 minutes, 29 seconds.
  • To count from 1 to 869 would take you about seven 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 869 cubic inches would be around 0.8 feet tall.

Recreational maths with 869

  • 869 backwards is 968
  • The number of decimal digits it has is: 3
  • The sum of 869's digits is 23
  • More coming soon!

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The information we have on file for 869 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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