λ
Sequence Observatory

9,891,437

1171 × 8447
Deficient Odd Composite

Starting at 9,891,437, the Collatz iteration reaches 1 after 57 steps. The first transition is 29674312; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 1171 × 8447
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 9,901,056
Proper Divisor Sum 9,619
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #9891391 ← → #9891439

Radix Representation

Decimal 9891437
Binary 100101101110111001101101 (24 bits)
Octal 0o45567155
Hexadecimal 0x96EE6D

Divisor Catalog (4)

1 1,171 8,447 9,891,437

Collatz Trajectory (57 steps to reach 1)

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

9,891,437 29,674,312 14,837,156 7,418,578 3,709,289 11,127,868 5,563,934 2,781,967 8,345,902 4,172,951 12,518,854 6,259,427 18,778,282 9,389,141 28,167,424 14,083,712 7,041,856 3,520,928 1,760,464 880,232 440,116 220,058 110,029 330,088 165,044 82,522 41,261 123,784 61,892 30,946 15,473 46,420 23,210 11,605 34,816 17,408 8,704 4,352 2,176 1,088 544 272 136 68 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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