989399920

Names of 989399920

• Cardinal: 989399920 can be written as Nine hundred eighty-nine million, three hundred ninety-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 9.8939992 × 10⁸

Factors of 989399920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 34285

Divisors of 989399920

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 190 304 361 380 722 760 1444 1520 1805 2888 3610 5776 7220 14440 28880 34259 68518 137036 171295 274072 342590 548144 650921 685180 1301842 1370360 2603684 2740720 3254605 5207368 6509210 10414736 12367499 13018420 24734998 26036840 49469996 52073680 61837495 98939992 123674990 197879984 247349980 494699960 989399920
• Sum of all divisors σ(n): 2427869160
• Sum of proper divisors (its aliquot sum) s(n): 1438469240
• 989399920 is an abundant number, because the sum of its proper divisors (1438469240) is greater than itself. Its abundance is 449069320

Bases of 989399920

• Binary: 111010111110010000101101110000₂
• Hexadecimal: 0x3AF90B70
• Base-36: GD29V4

Squares and roots of 989399920

• 989399920 squared (989399920²) is 978912201696006400
• 989399920 cubed (989399920³) is 968535654045052596479488000
• The square root of 989399920 is 31454.7281024649
• The cube root of 989399920 is 996.4540813223

Scales and comparisons

• 989,399,920 seconds is equal to 31 years, 23 weeks, 6 days, 9 hours, 18 minutes, 40 seconds.
• To count from 1 to 989,399,920 would take you about forty-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 989399920 cubic inches would be around 83 feet tall.

Recreational maths with 989399920

• 989399920 backwards is 029993989
• The number of decimal digits it has is: 9
• The sum of 989399920's digits is 58
• More coming soon!