79389879 has 8 divisors (see below), whose sum is σ = 105985392. Its totient is φ = 52860480.

The previous prime is 79389839. The next prime is 79389883. The reversal of 79389879 is 97898397.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79389879 - 2⁸ = 79389623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79389829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13654 + ... + 18579.

It is an arithmetic number, because the mean of its divisors is an integer number (13248174).

Almost surely, 2^79389879 is an apocalyptic number.

79389879 is a deficient number, since it is larger than the sum of its proper divisors (26595513).

79389879 is a wasteful number, since it uses less digits than its factorization.

79389879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33057.

The product of its digits is 6858432, while the sum is 60.

The square root of 79389879 is about 8910.0998310906. The cubic root of 79389879 is about 429.7887532774.

The spelling of 79389879 in words is "seventy-nine million, three hundred eighty-nine thousand, eight hundred seventy-nine".