1209

1,209 is an odd composite number composed of three prime numbers multiplied together.

What does the number 1209 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

1209 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 1209:

3 × 13 × 31

See below for interesting mathematical facts about the number 1209 from the Numbermatics database.


Names of 1209

  • Cardinal: 1209 can be written as One thousand, two hundred nine.

Scientific notation

  • Scientific notation: 1.209 × 103

Factors of 1209

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 47

Divisors of 1209

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1792
  • Sum of proper divisors (its aliquot sum) s(n): 583
  • 1209 is a deficient number, because the sum of its proper divisors (583) is less than itself. Its deficiency is 626

Bases of 1209

  • Binary: 100101110012
  • Hexadecimal: 0x4B9
  • Base-36: XL

Squares and roots of 1209

  • 1209 squared (12092) is 1461681
  • 1209 cubed (12093) is 1767172329
  • The square root of 1209 is 34.7706773015
  • The cube root of 1209 is 10.6530860153

Scales and comparisons

How big is 1209?
  • 1,209 seconds is equal to 20 minutes, 9 seconds.
  • To count from 1 to 1,209 would take you about twenty 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 1209 cubic inches would be around 0.9 feet tall.

Recreational maths with 1209

  • 1209 backwards is 9021
  • The number of decimal digits it has is: 4
  • The sum of 1209's digits is 12
  • More coming soon!

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"Number 1209 - Facts about the integer". Numbermatics.com. 2020. Web. 21 January 2020.

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The information we have on file for 1209 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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