79109073 has 6 divisors (see below), whose sum is σ = 114268674. Its totient is φ = 52739376.

The previous prime is 79109053. The next prime is 79109077. The reversal of 79109073 is 37090197.

It can be written as a sum of positive squares in only one way, i.e., 57653649 + 21455424 = 7593^2 + 4632^2 .

It is not a de Polignac number, because 79109073 - 2¹⁶ = 79043537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79109077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4394940 + ... + 4394957.

It is an arithmetic number, because the mean of its divisors is an integer number (19044779).

Almost surely, 2^79109073 is an apocalyptic number.

It is an amenable number.

79109073 is a deficient number, since it is larger than the sum of its proper divisors (35159601).

79109073 is a wasteful number, since it uses less digits than its factorization.

79109073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8789903 (or 8789900 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 79109073 is about 8894.3281365149. The cubic root of 79109073 is about 429.2814265049.

The spelling of 79109073 in words is "seventy-nine million, one hundred nine thousand, seventy-three".