9879172 has 6 divisors (see below), whose sum is σ = 17288558. Its totient is φ = 4939584.

The previous prime is 9879157. The next prime is 9879179. The reversal of 9879172 is 2719789.

It is a happy number.

9879172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5494336 + 4384836 = 2344^2 + 2094^2 .

It is not an unprimeable number, because it can be changed into a prime (9879179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234893 + ... + 1234900.

Almost surely, 2^9879172 is an apocalyptic number.

It is an amenable number.

9879172 is a deficient number, since it is larger than the sum of its proper divisors (7409386).

9879172 is a wasteful number, since it uses less digits than its factorization.

9879172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469797 (or 2469795 counting only the distinct ones).

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

The square root of 9879172 is about 3143.1150153948. The cubic root of 9879172 is about 214.5722304076.

The spelling of 9879172 in words is "nine million, eight hundred seventy-nine thousand, one hundred seventy-two".