9864172 has 24 divisors (see below), whose sum is σ = 17902080. Its totient is φ = 4752720.

The previous prime is 9864167. The next prime is 9864187. The reversal of 9864172 is 2714689.

9864172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12979 + ... + 13717.

It is an arithmetic number, because the mean of its divisors is an integer number (745920).

Almost surely, 2^9864172 is an apocalyptic number.

It is an amenable number.

9864172 is a deficient number, since it is larger than the sum of its proper divisors (8037908).

9864172 is a wasteful number, since it uses less digits than its factorization.

9864172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 859 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 9864172 is about 3140.7279410990. The cubic root of 9864172 is about 214.4635771114.

The spelling of 9864172 in words is "nine million, eight hundred sixty-four thousand, one hundred seventy-two".