79173928 has 8 divisors (see below), whose sum is σ = 148451130. Its totient is φ = 39586960.

The previous prime is 79173923. The next prime is 79173943. The reversal of 79173928 is 82937197.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73307844 + 5866084 = 8562^2 + 2422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (79173923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948363 + ... + 4948378.

Almost surely, 2^79173928 is an apocalyptic number.

It is an amenable number.

79173928 is a deficient number, since it is larger than the sum of its proper divisors (69277202).

79173928 is a wasteful number, since it uses less digits than its factorization.

79173928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9896747 (or 9896743 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 79173928 is about 8897.9732523761. The cubic root of 79173928 is about 429.3987052659.

The spelling of 79173928 in words is "seventy-nine million, one hundred seventy-three thousand, nine hundred twenty-eight".