1390958021

Names of 1390958021

• Cardinal: 1390958021 can be written as One billion, three hundred ninety million, nine hundred fifty-eight thousand and twenty-one.

Scientific notation

• Scientific notation: 1.390958021 × 10⁹

Factors of 1390958021

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 4747590

Divisors of 1390958021

• Number of divisors d(n): 4
• Complete list of divisors:
  1 293 4747297 1390958021
• Sum of all divisors σ(n): 1395705612
• Sum of proper divisors (its aliquot sum) s(n): 4747591
• 1390958021 is a deficient number, because the sum of its proper divisors (4747591) is less than itself. Its deficiency is 1386210430

Bases of 1390958021

• Binary: 1010010111010000101010111000101₂
• Hexadecimal: 0x52E855C5
• Base-36: N0522T

Squares and roots of 1390958021

• 1390958021 squared (1390958021²) is 1934764216184236441
• 1390958021 cubed (1390958021³) is 2691175805245241691369443261
• The square root of 1390958021 is 37295.5496138615
• The cube root of 1390958021 is 1116.2753666425

Scales and comparisons

• 1,390,958,021 seconds is equal to 44 years, 11 weeks, 6 days, 1 hour, 13 minutes, 41 seconds.
• To count from 1 to 1,390,958,021 would take you about eighty-eight 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 1390958021 cubic inches would be around 93 feet tall.

Recreational maths with 1390958021

• 1390958021 backwards is 1208590931
• The number of decimal digits it has is: 10
• The sum of 1390958021's digits is 38
• More coming soon!