9907172 has 12 divisors (see below), whose sum is σ = 18913776. Its totient is φ = 4503240.

The previous prime is 9907147. The next prime is 9907187. The reversal of 9907172 is 2717099.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112538 + ... + 112625.

It is an arithmetic number, because the mean of its divisors is an integer number (1576148).

Almost surely, 2^9907172 is an apocalyptic number.

It is an amenable number.

9907172 is a deficient number, since it is larger than the sum of its proper divisors (9006604).

9907172 is a wasteful number, since it uses less digits than its factorization.

9907172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225178 (or 225176 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 9907172 is about 3147.5660437868. The cubic root of 9907172 is about 214.7747559938.

The spelling of 9907172 in words is "nine million, nine hundred seven thousand, one hundred seventy-two".