3,978,481

13 × 29 × 61 × 173

Prime Factor Structure

Factorization String 13 × 29 × 61 × 173

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 4,530,960

Proper Divisor Sum 552,479

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #3978479 ← → #3978497

1 13 29 61 173 377 793 1,769 2,249 5,017 10,553 22,997 65,221 137,189 306,037 3,978,481

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

3,978,481 11,935,444 5,967,722 2,983,861 8,951,584 4,475,792 2,237,896 1,118,948 559,474 279,737 839,212 419,606 209,803 629,410 314,705 944,116 472,058 236,029 708,088 354,044 177,022 88,511 265,534 132,767 398,302 199,151 597,454 298,727 896,182 448,091 1,344,274 672,137 2,016,412 1,008,206 504,103 1,512,310 756,155 2,268,466 1,134,233 3,402,700 1,701,350 850,675 2,552,026 1,276,013 3,828,040 1,914,020 957,010 478,505 1,435,516 717,758 358,879 1,076,638 538,319 1,614,958 807,479 2,422,438 1,211,219 3,633,658 1,816,829 5,450,488

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