λ
Ratio Atlas
21,409
79 × 271
Deficient Odd Composite

Prime Factor Structure

Factorization String 79 × 271
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 21,760
Proper Divisor Sum 351
Digit Sum / Digital Root 16 (Root: 7)
Adjacent Primes #21407 ← → #21419

Radix Representation

Decimal 21409
Binary 101001110100001 (15 bits)
Octal 0o51641
Hexadecimal 0x53A1

Divisor Catalog (4)

Collatz Trajectory (56 steps to reach 1)

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

Active Feeder Network

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.

← Previous Integer #21,408 Browse Full Index Next Integer #21,410 →