149

149 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 149 look like?

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

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

Prime factorization of 149:

149

See below for interesting mathematical facts about the number 149 from the Numbermatics database.


Names of 149

  • Cardinal: 149 can be written as One hundred forty-nine.

Scientific notation

  • Scientific notation: 1.49 × 102

Factors of 149

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 149

Divisors of 149

  • Number of divisors d(n): 2
  • Complete list of divisors:
    1 149
  • Sum of all divisors σ(n): 150
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 149 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 148

Bases of 149

  • Binary: 100101012
  • Hexadecimal: 0x95
  • Base-36: 45

Squares and roots of 149

  • 149 squared (1492) is 22201
  • 149 cubed (1493) is 3307949
  • The square root of 149 is 12.2065556157
  • The cube root of 149 is 5.3014591923

Scales and comparisons

How big is 149?
  • 149 seconds is equal to 2 minutes, 29 seconds.
  • To count from 1 to 149 would take you about fourteen 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 149 cubic inches would be around 0.4 feet tall.

Recreational maths with 149

  • 149 backwards is 941
  • 149 is a twin prime! Its twin is 151
  • The number of decimal digits it has is: 3
  • The sum of 149's digits is 14
  • More coming soon!

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Numbermatics. (2020). Number 149 - Facts about the integer. Retrieved 25 October 2020, from https://numbermatics.com/n/149/

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The information we have on file for 149 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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