9,979,990
2 × 5 × 311 × 3209
Deficient
Even
Composite
Starting at 9,979,990, the Collatz iteration reaches 1 after 207 steps. The first transition is 4989995; the starting value is even with 16 positive divisors.
Resources
Prime Factor Structure
Factorization String
2 × 5 × 311 × 3209
Distinct Prime Factors
4
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
16
Divisor Sum (σ)
18,027,360
Proper Divisor Sum
8,047,370
Digit Sum / Digital Root
52 (Root: 7)
Adjacent Primes
#9979967 ← → #9979993
Radix Representation
| Decimal | 9979990 |
| Binary | 100110000100100001010110 (24 bits) |
| Octal | 0o46044126 |
| Hexadecimal | 0x984856 |
Divisor Catalog (5 of 16)
Collatz Trajectory (207 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.