2009

2,009 is an odd composite number composed of two prime numbers multiplied together.

What does the number 2009 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

2009 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

Prime factorization of 2009:

7² × 41

(7 × 7 × 41)

See below for interesting mathematical facts about the number 2009 from the Numbermatics database.

Names of 2009

Cardinal: 2009 can be written as Two thousand and nine.

Scientific notation

Scientific notation: 2.009 × 10³

Factors of 2009

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 3
Sum of prime factors: 48

Divisors of 2009

Number of divisors d(n): 6
Complete list of divisors:
1 7 41 49 287 2009
Sum of all divisors σ(n): 2394
Sum of proper divisors (its aliquot sum) s(n): 385
2009 is a deficient number, because the sum of its proper divisors (385) is less than itself. Its deficiency is 1624

Bases of 2009

Binary: 11111011001₂
Hexadecimal: 0x7D9
Base-36: 1JT

Squares and roots of 2009

2009 squared (2009²) is 4036081
2009 cubed (2009³) is 8108486729
The square root of 2009 is 44.8218696619
The cube root of 2009 is 12.6180810373

Scales and comparisons

How big is 2009?

2,009 seconds is equal to 33 minutes, 29 seconds.
To count from 1 to 2,009 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 2009 cubic inches would be around 1.1 feet tall.

Recreational maths with 2009

2009 backwards is 9002
The number of decimal digits it has is: 4
The sum of 2009's digits is 11
More coming soon!

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The information we have on file for 2009 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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