79172 has 6 divisors (see below), whose sum is σ = 138558. Its totient is φ = 39584.

The previous prime is 79159. The next prime is 79181. The reversal of 79172 is 27197.

It can be written as a sum of positive squares in only one way, i.e., 75076 + 4096 = 274^2 + 64^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9893 + ... + 9900.

It is an arithmetic number, because the mean of its divisors is an integer number (23093).

2⁷⁹¹⁷² is an apocalyptic number.

It is an amenable number.

79172 is a deficient number, since it is larger than the sum of its proper divisors (59386).

79172 is a wasteful number, since it uses less digits than its factorization.

79172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19797 (or 19795 counting only the distinct ones).

The product of its digits is 882, while the sum is 26.

The square root of 79172 is about 281.3751943580. The cubic root of 79172 is about 42.9395219744.

The spelling of 79172 in words is "seventy-nine thousand, one hundred seventy-two".