3987945

3,987,945 is an odd composite number composed of five prime numbers multiplied together.

What does the number 3987945 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

3987945 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 3987945:

3² × 5 × 13 × 17 × 401

(3 × 3 × 5 × 13 × 17 × 401)

See below for interesting mathematical facts about the number 3987945 from the Numbermatics database.

Names of 3987945

Cardinal: 3987945 can be written as Three million, nine hundred eighty-seven thousand, nine hundred forty-five.

Scientific notation

Scientific notation: 3.987945 × 10⁶

Factors of 3987945

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 439

Divisors of 3987945

Number of divisors d(n): 48
Complete list of divisors:
1 3 5 9 13 15 17 39 45 51 65 85 117 153 195 221 255 401 585 663 765 1105 1203 1989 2005 3315 3609 5213 6015 6817 9945 15639 18045 20451 26065 34085 46917 61353 78195 88621 102255 234585 265863 306765 443105 797589 1329315 3987945
Sum of all divisors σ(n): 7901712
Sum of proper divisors (its aliquot sum) s(n): 3913767
3987945 is a deficient number, because the sum of its proper divisors (3913767) is less than itself. Its deficiency is 74178

Bases of 3987945

Binary: 1111001101100111101001₂
Hexadecimal: 0x3CD9E9
Base-36: 2DH49

Squares and roots of 3987945

3987945 squared (3987945²) is 15903705323025
3987945 cubed (3987945³) is 63423102124430933625
The square root of 3987945 is 1996.9839758997
The cube root of 3987945 is 158.5804770655

Scales and comparisons

How big is 3987945?

3,987,945 seconds is equal to 6 weeks, 4 days, 3 hours, 45 minutes, 45 seconds.
To count from 1 to 3,987,945 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 3987945 cubic inches would be around 13.2 feet tall.

Recreational maths with 3987945

3987945 backwards is 5497893
3987945 is a Harshad number.
The number of decimal digits it has is: 7
The sum of 3987945's digits is 45
More coming soon!

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The information we have on file for 3987945 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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