79380729 has 20 divisors (see below), whose sum is σ = 120359184. Its totient is φ = 52127064.

The previous prime is 79380713. The next prime is 79380731. The reversal of 79380729 is 92708397.

It is not a de Polignac number, because 79380729 - 2⁴ = 79380713 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79380779) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1887 + ... + 12740.

Almost surely, 2^79380729 is an apocalyptic number.

It is an amenable number.

79380729 is a deficient number, since it is larger than the sum of its proper divisors (40978455).

79380729 is a wasteful number, since it uses less digits than its factorization.

79380729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14706 (or 14697 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 79380729 is about 8909.5863540346. The cubic root of 79380729 is about 429.7722410207.

The spelling of 79380729 in words is "seventy-nine million, three hundred eighty thousand, seven hundred twenty-nine".