79819173 has 24 divisors (see below), whose sum is σ = 132095808. Its totient is φ = 45496512.

The previous prime is 79819147. The next prime is 79819193. The reversal of 79819173 is 37191897.

It is not a de Polignac number, because 79819173 - 2⁶ = 79819109 is a prime.

It is a super-2 number, since 2×79819173² = 12742200756807858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79819193) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 28065 + ... + 30777.

It is an arithmetic number, because the mean of its divisors is an integer number (5503992).

Almost surely, 2^79819173 is an apocalyptic number.

It is an amenable number.

79819173 is a deficient number, since it is larger than the sum of its proper divisors (52276635).

79819173 is a wasteful number, since it uses less digits than its factorization.

79819173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193 (or 3190 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 79819173 is about 8934.1576547540. The cubic root of 79819173 is about 430.5620431245.

The spelling of 79819173 in words is "seventy-nine million, eight hundred nineteen thousand, one hundred seventy-three".