393,813

3² × 7² × 19 × 47

Prime Factor Structure

Factorization String 3^2 × 7^2 × 19 × 47

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 36

Divisor Sum (σ) 711,360

Proper Divisor Sum 317,547

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #393797 ← → #393847

1 3 7 9 19 21 47 49 57 63 133 141 147 171 329 399 423 441 893 931 987 1,197 2,303 2,679 2,793 2,961 6,251 6,909 8,037 8,379 18,753 20,727 43,757 56,259 131,271 393,813

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

393,813 1,181,440 590,720 295,360 147,680 73,840 36,920 18,460 9,230 4,615 13,846 6,923 20,770 10,385 31,156 15,578 7,789 23,368 11,684 5,842 2,921 8,764 4,382 2,191 6,574 3,287 9,862 4,931 14,794 7,397 22,192 11,096 5,548 2,774 1,387 4,162 2,081 6,244 3,122 1,561 4,684 2,342 1,171 3,514 1,757 5,272 2,636 1,318 659 1,978 989 2,968 1,484 742 371 1,114 557 1,672 836 418

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