394990040420799218

Names of 394990040420799218

• Cardinal: 394990040420799218 can be written as Three hundred ninety-four quadrillion, nine hundred ninety trillion, forty billion, four hundred twenty million, seven hundred ninety-nine thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 3.94990040420799218 × 10¹⁷

Factors of 394990040420799218

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 914744977

Divisors of 394990040420799218

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 47 94 4616957 9233914 216996979 433993958 910127971 1820255942 42776014637 85552029274 4202021706604247 8404043413208494 197495020210399609 394990040420799218
• Sum of all divisors σ(n): 605091257474281344
• Sum of proper divisors (its aliquot sum) s(n): 210101217053482126
• 394990040420799218 is a deficient number, because the sum of its proper divisors (210101217053482126) is less than itself. Its deficiency is 184888823367317092

Bases of 394990040420799218

• Binary: 10101111011010010010101100101011001000110010101001011110010₂
• Hexadecimal: 0x57B4959591952F2
• Base-36: 3018A7JHX1IQ

Squares and roots of 394990040420799218

• 394990040420799218 squared (394990040420799218²) is 156017132031624600076649421869411524
• 394990040420799218 cubed (394990040420799218³) is 61625213287508569202770141191992549424021427419388232
• The square root of 394990040420799218 is 628482331.0331001007
• The cube root of 394990040420799218 is 733717.2253414475

Scales and comparisons

• 394,990,040,420,799,218 seconds is equal to 12,559,461,500 years, 50 weeks, 1 day, 20 hours, 13 minutes, 38 seconds.
• To count from 1 to 394,990,040,420,799,218 would take you about thirty-seven billion, six hundred seventy-eight million, three hundred eighty-four thousand, five hundred two 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 394990040420799218 cubic inches would be around 61143.1 feet tall.

Recreational maths with 394990040420799218

• 394990040420799218 backwards is 812997024040099493
• The number of decimal digits it has is: 18
• The sum of 394990040420799218's digits is 80
• More coming soon!