79369878 has 64 divisors (see below), whose sum is σ = 193536000. Its totient is φ = 21194784.

The previous prime is 79369861. The next prime is 79369949. The reversal of 79369878 is 87896397.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62413 + ... + 63671.

It is an arithmetic number, because the mean of its divisors is an integer number (3024000).

Almost surely, 2^79369878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79369878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96768000).

79369878 is an abundant number, since it is smaller than the sum of its proper divisors (114166122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79369878 is a wasteful number, since it uses less digits than its factorization.

79369878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its digits is 4572288, while the sum is 57.

The square root of 79369878 is about 8908.9773823936. The cubic root of 79369878 is about 429.7526574636.

The spelling of 79369878 in words is "seventy-nine million, three hundred sixty-nine thousand, eight hundred seventy-eight".