3² × 13² × 257

Prime Factor Structure

Factorization String 3^2 × 13^2 × 257

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 613,782

Proper Divisor Sum 222,885

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #390893 ← → #390953

1 3 9 13 39 117 169 257 507 771 1,521 2,313 3,341 10,023 30,069 43,433 130,299 390,897

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

390,897 1,172,692 586,346 293,173 879,520 439,760 219,880 109,940 54,970 27,485 82,456 41,228 20,614 10,307 30,922 15,461 46,384 23,192 11,596 5,798 2,899 8,698 4,349 13,048 6,524 3,262 1,631 4,894 2,447 7,342 3,671 11,014 5,507 16,522 8,261 24,784 12,392 6,196 3,098 1,549 4,648 2,324 1,162 581 1,744 872 436 218 109 328 164 82 41 124 62 31 94 47 142 71

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