79558040 has 64 divisors (see below), whose sum is σ = 185220000. Its totient is φ = 30735360.

The previous prime is 79558021. The next prime is 79558051. The reversal of 79558040 is 4085597.

It is a junction number, because it is equal to n+sod(n) for n = 79557985 and 79558003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227786 + ... + 228134.

Almost surely, 2^79558040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79558040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92610000).

79558040 is an abundant number, since it is smaller than the sum of its proper divisors (105661960).

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

79558040 is a wasteful number, since it uses less digits than its factorization.

79558040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 79558040 is about 8919.5313778247. The cubic root of 79558040 is about 430.0919940185.

The spelling of 79558040 in words is "seventy-nine million, five hundred fifty-eight thousand, forty".