9956259172 has 12 divisors (see below), whose sum is σ = 17432490096. Its totient is φ = 4975547720.

The previous prime is 9956259169. The next prime is 9956259197. The reversal of 9956259172 is 2719526599.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636778 + ... + 652225.

It is an arithmetic number, because the mean of its divisors is an integer number (1452707508).

Almost surely, 2^9956259172 is an apocalyptic number.

It is an amenable number.

9956259172 is a deficient number, since it is larger than the sum of its proper divisors (7476230924).

9956259172 is a wasteful number, since it uses less digits than its factorization.

9956259172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290938 (or 1290936 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 55.

The square root of 9956259172 is about 99781.0561780141. The cubic root of 9956259172 is about 2151.2888736362.

The spelling of 9956259172 in words is "nine billion, nine hundred fifty-six million, two hundred fifty-nine thousand, one hundred seventy-two".