9,571,491

3² × 41 × 25939

9,571,491 has digital root 9. The neighboring primes are 9571489 and 9571501; its proper-divisor sum differs from the starting integer by -4,979,742.

Prime Factor Structure

Factorization String 3^2 × 41 × 25939

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 12

Divisor Sum (σ) 14,163,240

Proper Divisor Sum 4,591,749

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #9571489 ← → #9571501

1 3 9 41 123 369 25,939 77,817 233,451 1,063,499 3,190,497 9,571,491

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

9,571,491 28,714,474 14,357,237 43,071,712 21,535,856 10,767,928 5,383,964 2,691,982 1,345,991 4,037,974 2,018,987 6,056,962 3,028,481 9,085,444 4,542,722 2,271,361 6,814,084 3,407,042 1,703,521 5,110,564 2,555,282 1,277,641 3,832,924 1,916,462 958,231 2,874,694 1,437,347 4,312,042 2,156,021 6,468,064 3,234,032 1,617,016 808,508 404,254 202,127 606,382 303,191 909,574 454,787 1,364,362 682,181 2,046,544 1,023,272 511,636 255,818 127,909 383,728 191,864 95,932 47,966 23,983 71,950 35,975 107,926 53,963 161,890 80,945 242,836 121,418 60,709