79500978 has 24 divisors (see below), whose sum is σ = 181318800. Its totient is φ = 25105464.

The previous prime is 79500961. The next prime is 79500979. The reversal of 79500978 is 87900597.

79500978 is a `hidden beast` number, since 79 + 500 + 9 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (79500979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115888 + ... + 116571.

It is an arithmetic number, because the mean of its divisors is an integer number (7554950).

Almost surely, 2^79500978 is an apocalyptic number.

79500978 is an abundant number, since it is smaller than the sum of its proper divisors (101817822).

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

79500978 is a wasteful number, since it uses less digits than its factorization.

79500978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232486 (or 232483 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 79500978 is about 8916.3320934115. The cubic root of 79500978 is about 429.9891434072.

The spelling of 79500978 in words is "seventy-nine million, five hundred thousand, nine hundred seventy-eight".