138907489

138,907,489 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138907489 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

138907489 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 138907489:

7 × 19843927

See below for interesting mathematical facts about the number 138907489 from the Numbermatics database.

Names of 138907489

Cardinal: 138907489 can be written as One hundred thirty-eight million, nine hundred seven thousand, four hundred eighty-nine.

Scientific notation

Scientific notation: 1.38907489 × 10⁸

Factors of 138907489

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 19843934

Divisors of 138907489

Number of divisors d(n): 4
Complete list of divisors:
1 7 19843927 138907489
Sum of all divisors σ(n): 158751424
Sum of proper divisors (its aliquot sum) s(n): 19843935
138907489 is a deficient number, because the sum of its proper divisors (19843935) is less than itself. Its deficiency is 119063554

Bases of 138907489

Binary: 1000010001111000111101100001₂
Hexadecimal: 0x8478F61
Base-36: 2AP9PD

Squares and roots of 138907489

138907489 squared (138907489²) is 19295290500285121
138907489 cubed (138907489³) is 2680260352920159942171169
The square root of 138907489 is 11785.9021292389
The cube root of 138907489 is 517.8952012417

Scales and comparisons

How big is 138907489?

138,907,489 seconds is equal to 4 years, 21 weeks, 4 days, 17 hours, 24 minutes, 49 seconds.
To count from 1 to 138,907,489 would take you about six years!

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 138907489 cubic inches would be around 43.2 feet tall.

Recreational maths with 138907489

138907489 backwards is 984709831
The number of decimal digits it has is: 9
The sum of 138907489's digits is 49
More coming soon!

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The information we have on file for 138907489 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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