405991

Prime Factor Structure

Factorization String 405991

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 405,992

Proper Divisor Sum 1

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #405989 ← → #405997

1 405,991

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

405,991 1,217,974 608,987 1,826,962 913,481 2,740,444 1,370,222 685,111 2,055,334 1,027,667 3,083,002 1,541,501 4,624,504 2,312,252 1,156,126 578,063 1,734,190 867,095 2,601,286 1,300,643 3,901,930 1,950,965 5,852,896 2,926,448 1,463,224 731,612 365,806 182,903 548,710 274,355 823,066 411,533 1,234,600 617,300 308,650 154,325 462,976 231,488 115,744 57,872 28,936 14,468 7,234 3,617 10,852 5,426 2,713 8,140 4,070 2,035 6,106 3,053 9,160 4,580 2,290 1,145 3,436 1,718 859 2,578

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