394489940
394,489,940 is an even composite number composed of five prime numbers multiplied together.
What does the number 394489940 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.
394489940 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 394489940:
22 × 5 × 132 × 127 × 919
(2 × 2 × 5 × 13 × 13 × 127 × 919)See below for interesting mathematical facts about the number 394489940 from the Numbermatics database.
Names of 394489940
- Cardinal: 394489940 can be written as Three hundred ninety-four million, four hundred eighty-nine thousand, nine hundred forty.
Scientific notation
- Scientific notation: 3.9448994 × 108
Factors of 394489940
Divisors of 394489940
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 10 13 20 26 52 65 127 130 169 254 260 338 508 635 676 845 919 1270 1651 1690 1838 2540 3302 3380 3676 4595 6604 8255 9190 11947 16510 18380 21463 23894 33020 42926 47788 59735 85852 107315 116713 119470 155311 214630 233426 238940 310622 429260 466852 583565 621244 776555 1167130 1517269 1553110 2334260 3034538 3106220 6069076 7586345 15172690 19724497 30345380 39448994 78897988 98622485 197244970 394489940
- Sum of all divisors σ(n): 905103360
- Sum of proper divisors (its aliquot sum) s(n): 510613420
- 394489940 is an abundant number, because the sum of its proper divisors (510613420) is greater than itself. Its abundance is 116123480
Bases of 394489940
- Binary: 101111000001101110000010101002
- Hexadecimal: 0x17837054
- Base-36: 6IVADW
Squares and roots of 394489940
- 394489940 squared (3944899402) is 155622312761203600
- 394489940 cubed (3944899403) is 61391436823828442491784000
-
The
square root of 394489940 is 19861.7708173265 -
The
cube root of 394489940 is 733.4074392513
Scales and comparisons
How big is 394489940?- 394,489,940 seconds is equal to 12 years, 28 weeks, 1 day, 20 hours, 32 minutes, 20 seconds.
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To count from 1 to 394,489,940 would take you about eighteen 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 394489940 cubic inches would be around 61.1 feet tall.
Recreational maths with 394489940
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