1999793439

Names of 1999793439

• Cardinal: 1999793439 can be written as One billion, nine hundred ninety-nine million, seven hundred ninety-three thousand, four hundred thirty-nine.

Scientific notation

• Scientific notation: 1.999793439 × 10⁹

Factors of 1999793439

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1091

Divisors of 1999793439

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 21 49 61 63 79 147 183 237 427 441 549 553 711 941 1281 1659 2823 2989 3843 3871 4819 4977 6587 8469 8967 11613 14457 19761 26901 33733 34839 43371 46109 57401 59283 74339 101199 138327 172203 223017 236131 303597 401807 414981 516609 520373 669051 708393 1205421 1561119 2125179 2812649 3616263 3642611 4534679 4683357 8437947 10927833 13604037 25313841 31742753 32783499 40812111 95228259 222199271 285684777 666597813 1999793439
• Sum of all divisors σ(n): 3462189120
• Sum of proper divisors (its aliquot sum) s(n): 1462395681
• 1999793439 is a deficient number, because the sum of its proper divisors (1462395681) is less than itself. Its deficiency is 537397758

Bases of 1999793439

• Binary: 1110111001100100110110100011111₂
• Hexadecimal: 0x77326D1F
• Base-36: X2MIHR

Squares and roots of 1999793439

• 1999793439 squared (1999793439²) is 3999173798667446721
• 1999793439 cubed (1999793439³) is 7997521523995866895537863519
• The square root of 1999793439 is 44719.0500681755
• The cube root of 1999793439 is 1259.8776733095

Scales and comparisons

• 1,999,793,439 seconds is equal to 63 years, 30 weeks, 3 days, 18 hours, 10 minutes, 39 seconds.
• To count from 1 to 1,999,793,439 would take you about one hundred twenty-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 1999793439 cubic inches would be around 105 feet tall.

Recreational maths with 1999793439

• 1999793439 backwards is 9343979991
• 1999793439 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1999793439's digits is 63
• More coming soon!