3999921

3,999,921 is an odd composite number composed of three prime numbers multiplied together.

What does the number 3999921 look like?

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

3999921 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 3999921:

3 × 421 × 3167

See below for interesting mathematical facts about the number 3999921 from the Numbermatics database.

Names of 3999921

Cardinal: 3999921 can be written as Three million, nine hundred ninety-nine thousand, nine hundred twenty-one.

Scientific notation

Scientific notation: 3.999921 × 10⁶

Factors of 3999921

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 3591

Divisors of 3999921

Number of divisors d(n): 8
Complete list of divisors:
1 3 421 1263 3167 9501 1333307 3999921
Sum of all divisors σ(n): 5347584
Sum of proper divisors (its aliquot sum) s(n): 1347663
3999921 is a deficient number, because the sum of its proper divisors (1347663) is less than itself. Its deficiency is 2652258

Bases of 3999921

Binary: 1111010000100010110001₂
Hexadecimal: 0x3D08B1
Base-36: 2DQCX

Squares and roots of 3999921

3999921 squared (3999921²) is 15999368006241
3999921 cubed (3999921³) is 63996208074891506961
The square root of 3999921 is 1999.9802499025
The cube root of 3999921 is 158.7390601509

Scales and comparisons

How big is 3999921?

3,999,921 seconds is equal to 6 weeks, 4 days, 7 hours, 5 minutes, 21 seconds.
To count from 1 to 3,999,921 would take you about nine weeks!

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 3999921 cubic inches would be around 13.2 feet tall.

Recreational maths with 3999921

3999921 backwards is 1299993
The number of decimal digits it has is: 7
The sum of 3999921's digits is 42
More coming soon!

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The information we have on file for 3999921 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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