6404139990

Names of 6404139990

• Cardinal: 6404139990 can be written as Six billion, four hundred four million, one hundred thirty-nine thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 6.40413999 × 10⁹

Factors of 6404139990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1813

Divisors of 6404139990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 53 54 90 106 135 159 265 270 311 318 477 530 622 795 933 954 1431 1439 1555 1590 1866 2385 2799 2862 2878 3110 4317 4665 4770 5598 7155 7195 8397 8634 9330 12951 13995 14310 14390 16483 16794 21585 25902 27990 32966 38853 41985 43170 49449 64755 76267 77706 82415 83970 98898 129510 148347 152534 164830 194265 228801 247245 296694 381335 388530 445041 447529 457602 494490 686403 741735 762670 890082 895058 1144005 1342587 1372806 1483470 2059209 2225205 2237645 2288010 2685174 3432015 4027761 4118418 4450410 4475290 6712935 6864030 8055522 10296045 12083283 13425870 20138805 20592090 23719037 24166566 40277610 47438074 60416415 71157111 118595185 120832830 142314222 213471333 237190370 355785555 426942666 640413999 711571110 1067356665 1280827998 2134713330 3202069995 6404139990
• Sum of all divisors σ(n): 17468006400
• Sum of proper divisors (its aliquot sum) s(n): 11063866410
• 6404139990 is an abundant number, because the sum of its proper divisors (11063866410) is greater than itself. Its abundance is 4659726420

Bases of 6404139990

• Binary: 101111101101101110110101111010110₂
• Hexadecimal: 0x17DB76BD6
• Base-36: 2XWUY1I

Squares and roots of 6404139990

• 6404139990 squared (6404139990²) is 41013009011517200100
• 6404139990 cubed (6404139990³) is 262653051120887671733241999000
• The square root of 6404139990 is 80025.8707544005
• The cube root of 6404139990 is 1857.0357832237

Scales and comparisons

• 6,404,139,990 seconds is equal to 203 years, 32 weeks, 5 days, 23 hours, 46 minutes, 30 seconds.
• To count from 1 to 6,404,139,990 would take you about four hundred seven 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 6404139990 cubic inches would be around 154.8 feet tall.

Recreational maths with 6404139990

• 6404139990 backwards is 0999314046
• 6404139990 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6404139990's digits is 45
• More coming soon!