398390021

398,390,021 is an odd composite number composed of three prime numbers multiplied together.

What does the number 398390021 look like?

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

398390021 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 398390021:

31 × 193 × 66587

See below for interesting mathematical facts about the number 398390021 from the Numbermatics database.

Names of 398390021

Cardinal: 398390021 can be written as Three hundred ninety-eight million, three hundred ninety thousand and twenty-one.

Scientific notation

Scientific notation: 3.98390021 × 10⁸

Factors of 398390021

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 66811

Divisors of 398390021

Number of divisors d(n): 8
Complete list of divisors:
1 31 193 5983 66587 2064197 12851291 398390021
Sum of all divisors σ(n): 413378304
Sum of proper divisors (its aliquot sum) s(n): 14988283
398390021 is a deficient number, because the sum of its proper divisors (14988283) is less than itself. Its deficiency is 383401738

Bases of 398390021

Binary: 10111101111101111001100000101₂
Hexadecimal: 0x17BEF305
Base-36: 6L6VPH

Squares and roots of 398390021

398390021 squared (398390021²) is 158714608832380441
398390021 cubed (398390021³) is 63230316345738829369979261
The square root of 398390021 is 19959.7099427823
The cube root of 398390021 is 735.8164349285

Scales and comparisons

How big is 398390021?

398,390,021 seconds is equal to 12 years, 34 weeks, 4 days, 23 hours, 53 minutes, 41 seconds.
To count from 1 to 398,390,021 would take you about nineteen 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 398390021 cubic inches would be around 61.3 feet tall.

Recreational maths with 398390021

398390021 backwards is 120093893
The number of decimal digits it has is: 9
The sum of 398390021's digits is 35
More coming soon!

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The information we have on file for 398390021 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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