λ
Sigma Notebook

8,399,365

5 × 13 × 129221
Deficient Odd Composite

8,399,365 is odd and not a perfect square. Its factorization is 5 × 13 × 129221 and its 8 divisors sum to 10,854,648.

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Prime Factor Structure

Factorization String 5 × 13 × 129221
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 10,854,648
Proper Divisor Sum 2,455,283
Digit Sum / Digital Root 43 (Root: 7)
Adjacent Primes #8399317 ← → #8399381

Radix Representation

Decimal 8399365
Binary 100000000010101000000101 (24 bits)
Octal 0o40025005
Hexadecimal 0x802A05

Divisor Catalog (5 of 8)

Collatz Trajectory (230 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

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