7899172 has 12 divisors (see below), whose sum is σ = 14269696. Its totient is φ = 3822120.

The previous prime is 7899163. The next prime is 7899179. The reversal of 7899172 is 2719987.

It is a happy number.

7899172 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (7899179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31728 + ... + 31975.

Almost surely, 2^7899172 is an apocalyptic number.

It is an amenable number.

7899172 is a deficient number, since it is larger than the sum of its proper divisors (6370524).

7899172 is a wasteful number, since it uses less digits than its factorization.

7899172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63738 (or 63736 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 7899172 is about 2810.5465660615. The cubic root of 7899172 is about 199.1562117802.

The spelling of 7899172 in words is "seven million, eight hundred ninety-nine thousand, one hundred seventy-two".