390421

Names of 390421

• Cardinal: 390421 can be written as Three hundred ninety thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 3.90421 × 10⁵

Factors of 390421

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 390421

Divisors of 390421

• Number of divisors d(n): 2
• Complete list of divisors:
  1 390421
• Sum of all divisors σ(n): 390422
• Sum of proper divisors (its aliquot sum) s(n): 1
• 390421 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 390420

Bases of 390421

• Binary: 1011111010100010101₂
• Hexadecimal: 0x5F515
• Base-36: 8D91

Squares and roots of 390421

• 390421 squared (390421²) is 152428557241
• 390421 cubed (390421³) is 59511309746588461
• The square root of 390421 is 624.8367786871
• The cube root of 390421 is 73.0877159143

Scales and comparisons

• 390,421 seconds is equal to 4 days, 12 hours, 27 minutes, 1 second.
• To count from 1 to 390,421 would take you about four days.

  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 390421 cubic inches would be around 6.1 feet tall.

Recreational maths with 390421

• 390421 backwards is 124093
• The number of decimal digits it has is: 6
• The sum of 390421's digits is 19
• More coming soon!