79009172 has 12 divisors (see below), whose sum is σ = 150835776. Its totient is φ = 35913240.

The previous prime is 79009159. The next prime is 79009181. The reversal of 79009172 is 27190097.

It is a congruent number.

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, 897788 + ... + 897875.

It is an arithmetic number, because the mean of its divisors is an integer number (12569648).

Almost surely, 2^79009172 is an apocalyptic number.

It is an amenable number.

79009172 is a deficient number, since it is larger than the sum of its proper divisors (71826604).

79009172 is a wasteful number, since it uses less digits than its factorization.

79009172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795678 (or 1795676 counting only the distinct ones).

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

The square root of 79009172 is about 8888.7103676518. The cubic root of 79009172 is about 429.1006477935.

The spelling of 79009172 in words is "seventy-nine million, nine thousand, one hundred seventy-two".