3,999,940

2² × 5 × 7 × 28571

Prime Factor Structure

Factorization String 2^2 × 5 × 7 × 28571

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 24

Divisor Sum (σ) 9,600,192

Proper Divisor Sum 5,600,252

Digit Sum / Digital Root 43 (Root: 7)

Adjacent Primes #3999929 ← → #3999949

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

3,999,940 1,999,970 999,985 2,999,956 1,499,978 749,989 2,249,968 1,124,984 562,492 281,246 140,623 421,870 210,935 632,806 316,403 949,210 474,605 1,423,816 711,908 355,954 177,977 533,932 266,966 133,483 400,450 200,225 600,676 300,338 150,169 450,508 225,254 112,627 337,882 168,941 506,824 253,412 126,706 63,353 190,060 95,030 47,515 142,546 71,273 213,820 106,910 53,455 160,366 80,183 240,550 120,275 360,826 180,413 541,240 270,620 135,310 67,655 202,966 101,483 304,450 152,225

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