7,921,989

3³ × 59 × 4973

7,921,989 has the prime decomposition 3^3 × 59 × 4973. Its 3 distinct prime factors produce 16 positive divisors.

Prime Factor Structure

Factorization String 3^3 × 59 × 4973

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 11,937,600

Proper Divisor Sum 4,015,611

Digit Sum / Digital Root 45 (Root: 9)

Adjacent Primes #7921987 ← → #7921999

1 3 9 27 59 177 531 1,593 4,973 14,919 44,757 134,271 293,407 880,221 2,640,663 7,921,989

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

7,921,989 23,765,968 11,882,984 5,941,492 2,970,746 1,485,373 4,456,120 2,228,060 1,114,030 557,015 1,671,046 835,523 2,506,570 1,253,285 3,759,856 1,879,928 939,964 469,982 234,991 704,974 352,487 1,057,462 528,731 1,586,194 793,097 2,379,292 1,189,646 594,823 1,784,470 892,235 2,676,706 1,338,353 4,015,060 2,007,530 1,003,765 3,011,296 1,505,648 752,824 376,412 188,206 94,103 282,310 141,155 423,466 211,733 635,200 317,600 158,800 79,400 39,700 19,850 9,925 29,776 14,888 7,444 3,722 1,861 5,584 2,792 1,396