389

389 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 389 look like?

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

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

Prime factorization of 389:

389

See below for interesting mathematical facts about the number 389 from the Numbermatics database.


Names of 389

  • Cardinal: 389 can be written as Three hundred eighty-nine.

Scientific notation

  • Scientific notation: 3.89 × 102

Factors of 389

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 389

Divisors of 389

  • Number of divisors d(n): 2
  • Complete list of divisors:
    1 389
  • Sum of all divisors σ(n): 390
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 389 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 388

Bases of 389

  • Binary: 1100001012
  • Hexadecimal: 0x185
  • Base-36: AT

Squares and roots of 389

  • 389 squared (3892) is 151321
  • 389 cubed (3893) is 58863869
  • The square root of 389 is 19.7230829233
  • The cube root of 389 is 7.2998936619

Scales and comparisons

How big is 389?
  • 389 seconds is equal to 6 minutes, 29 seconds.
  • To count from 1 to 389 would take you about three 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 389 cubic inches would be around 0.6 feet tall.

Recreational maths with 389

  • 389 backwards is 983
  • The number of decimal digits it has is: 3
  • The sum of 389's digits is 20
  • More coming soon!

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The information we have on file for 389 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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