79785079 has 4 divisors (see below), whose sum is σ = 87038280. Its totient is φ = 72531880.

The previous prime is 79785071. The next prime is 79785107. The reversal of 79785079 is 97058797.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79785079 - 2³ = 79785071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79785071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626584 + ... + 3626605.

It is an arithmetic number, because the mean of its divisors is an integer number (21759570).

Almost surely, 2^79785079 is an apocalyptic number.

79785079 is a deficient number, since it is larger than the sum of its proper divisors (7253201).

79785079 is a wasteful number, since it uses less digits than its factorization.

79785079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253200.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 79785079 is about 8932.2493807551. The cubic root of 79785079 is about 430.5007309012.

The spelling of 79785079 in words is "seventy-nine million, seven hundred eighty-five thousand, seventy-nine".