824,139

3² × 91571

824,139 has digital root 9. The neighboring primes are 824137 and 824147; its proper-divisor sum differs from the starting integer by -457,842.

Prime Factor Structure

Factorization String 3^2 × 91571

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 6

Divisor Sum (σ) 1,190,436

Proper Divisor Sum 366,297

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #824137 ← → #824147

1 3 9 91,571 274,713 824,139

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

824,139 2,472,418 1,236,209 3,708,628 1,854,314 927,157 2,781,472 1,390,736 695,368 347,684 173,842 86,921 260,764 130,382 65,191 195,574 97,787 293,362 146,681 440,044 220,022 110,011 330,034 165,017 495,052 247,526 123,763 371,290 185,645 556,936 278,468 139,234 69,617 208,852 104,426 52,213 156,640 78,320 39,160 19,580 9,790 4,895 14,686 7,343 22,030 11,015 33,046 16,523 49,570 24,785 74,356 37,178 18,589 55,768 27,884 13,942 6,971 20,914 10,457 31,372