3,977,207

13 × 31 × 71 × 139

Prime Factor Structure

Factorization String 13 × 31 × 71 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 4,515,840

Proper Divisor Sum 538,633

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #3977203 ← → #3977209

1 13 31 71 139 403 923 1,807 2,201 4,309 9,869 28,613 56,017 128,297 305,939 3,977,207

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

3,977,207 11,931,622 5,965,811 17,897,434 8,948,717 26,846,152 13,423,076 6,711,538 3,355,769 10,067,308 5,033,654 2,516,827 7,550,482 3,775,241 11,325,724 5,662,862 2,831,431 8,494,294 4,247,147 12,741,442 6,370,721 19,112,164 9,556,082 4,778,041 14,334,124 7,167,062 3,583,531 10,750,594 5,375,297 16,125,892 8,062,946 4,031,473 12,094,420 6,047,210 3,023,605 9,070,816 4,535,408 2,267,704 1,133,852 566,926 283,463 850,390 425,195 1,275,586 637,793 1,913,380 956,690 478,345 1,435,036 717,518 358,759 1,076,278 538,139 1,614,418 807,209 2,421,628 1,210,814 605,407 1,816,222 908,111

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