4,006,389
3 × 197 × 6779
Deficient
Odd
Composite
4,006,389 has digital root 3. The neighboring primes are 4006381 and 4006403; its proper-divisor sum differs from the starting integer by -2,643,018.
Resources
Prime Factor Structure
Factorization String
3 × 197 × 6779
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
5,369,760
Proper Divisor Sum
1,363,371
Digit Sum / Digital Root
30 (Root: 3)
Adjacent Primes
#4006381 ← → #4006403
Radix Representation
| Decimal | 4006389 |
| Binary | 1111010010000111110101 (22 bits) |
| Octal | 0o17220765 |
| Hexadecimal | 0x3D21F5 |
Divisor Catalog (5 of 8)
Collatz Trajectory (154 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.