1,999 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 1999 look like?

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

1999 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 1999:


See below for interesting mathematical facts about the number 1999 from the Numbermatics database.

Names of 1999

  • Cardinal: 1999 can be written as One thousand, nine hundred ninety-nine.

Scientific notation

  • Scientific notation: 1.999 × 103

Factors of 1999

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 1999

Divisors of 1999

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 2000
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 1999 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1998

Bases of 1999

  • Binary: 111110011112
  • Hexadecimal: 0x7CF
  • Base-36: 1JJ

Squares and roots of 1999

  • 1999 squared (19992) is 3996001
  • 1999 cubed (19993) is 7988005999
  • The square root of 1999 is 44.7101778123
  • The cube root of 1999 is 12.5971102805

Scales and comparisons

How big is 1999?
  • 1,999 seconds is equal to 33 minutes, 19 seconds.
  • To count from 1 to 1,999 would take you about thirty-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 1999 cubic inches would be around 1 feet tall.

Recreational maths with 1999

  • 1999 backwards is 9991
  • The number of decimal digits it has is: 4
  • The sum of 1999's digits is 28
  • More coming soon!

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"Number 1999 - Facts about the integer". Numbermatics.com. 2024. Web. 26 February 2024.

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Numbermatics. (2024). Number 1999 - Facts about the integer. Retrieved 26 February 2024, from https://numbermatics.com/n/1999/

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Numbermatics. 2024. "Number 1999 - Facts about the integer". https://numbermatics.com/n/1999/

The information we have on file for 1999 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 1999, math, Factors of 1999, curriculum, school, college, exams, university, Prime factorization of 1999, STEM, science, technology, engineering, physics, economics, calculator, one thousand, nine hundred ninety-nine.

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