389,987

13 × 131 × 229

389,987 has the prime decomposition 13 × 131 × 229. Its 3 distinct prime factors produce 8 positive divisors.

Prime Factor Structure

Factorization String 13 × 131 × 229

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 425,040

Proper Divisor Sum 35,053

Digit Sum / Digital Root 44 (Root: 8)

Adjacent Primes #389981 ← → #389989

Radix Representation

Decimal	389987
Binary	1011111001101100011 (19 bits)
Octal	0o1371543
Hexadecimal	0x5F363

Divisor Catalog (8)

1 13 131 229 1,703 2,977 29,999 389,987

Collatz Trajectory (99 steps to reach 1)

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

389,987 1,169,962 584,981 1,754,944 877,472 438,736 219,368 109,684 54,842 27,421 82,264 41,132 20,566 10,283 30,850 15,425 46,276 23,138 11,569 34,708 17,354 8,677 26,032 13,016 6,508 3,254 1,627 4,882 2,441 7,324 3,662 1,831 5,494 2,747 8,242 4,121 12,364 6,182 3,091 9,274 4,637 13,912 6,956 3,478 1,739 5,218 2,609 7,828 3,914 1,957 5,872 2,936 1,468 734 367 1,102 551 1,654 827 2,482

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