79164309 has 16 divisors (see below), whose sum is σ = 123199488. Its totient is φ = 44273712.

The previous prime is 79164301. The next prime is 79164311. The reversal of 79164309 is 90346197.

It is not a de Polignac number, because 79164309 - 2³ = 79164301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79164301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39117 + ... + 41090.

It is an arithmetic number, because the mean of its divisors is an integer number (7699968).

Almost surely, 2^79164309 is an apocalyptic number.

It is an amenable number.

79164309 is a deficient number, since it is larger than the sum of its proper divisors (44035179).

79164309 is a wasteful number, since it uses less digits than its factorization.

79164309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80264.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 79164309 is about 8897.4327196108. The cubic root of 79164309 is about 429.3813150571.

The spelling of 79164309 in words is "seventy-nine million, one hundred sixty-four thousand, three hundred nine".