129443829

Names of 129443829

• Cardinal: 129443829 can be written as One hundred twenty-nine million, four hundred forty-three thousand, eight hundred twenty-nine.

Scientific notation

• Scientific notation: 1.29443829 × 10⁸

Factors of 129443829

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 43147946

Divisors of 129443829

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 43147943 129443829
• Sum of all divisors σ(n): 172591776
• Sum of proper divisors (its aliquot sum) s(n): 43147947
• 129443829 is a deficient number, because the sum of its proper divisors (43147947) is less than itself. Its deficiency is 86295882

Bases of 129443829

• Binary: 111101101110010011111110101₂
• Hexadecimal: 0x7B727F5
• Base-36: 252FHX

Squares and roots of 129443829

• 129443829 squared (129443829²) is 16755704866181241
• 129443829 cubed (129443829³) is 2168922595472432443011789
• The square root of 129443829 is 11377.3383970065
• The cube root of 129443829 is 505.8562463005

Scales and comparisons

• 129,443,829 seconds is equal to 4 years, 6 weeks, 4 hours, 37 minutes, 9 seconds.
• To count from 1 to 129,443,829 would take you about six 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 129443829 cubic inches would be around 42.2 feet tall.

Recreational maths with 129443829

• 129443829 backwards is 928344921
• The number of decimal digits it has is: 9
• The sum of 129443829's digits is 42
• More coming soon!