79880544 has 36 divisors (see below), whose sum is σ = 227161116. Its totient is φ = 26626752.

The previous prime is 79880531. The next prime is 79880557. The reversal of 79880544 is 44508897.

It is an interprime number because it is at equal distance from previous prime (79880531) and next prime (79880557).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 79880544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138394 + ... + 138969.

It is an arithmetic number, because the mean of its divisors is an integer number (6310031).

Almost surely, 2^79880544 is an apocalyptic number.

It is an amenable number.

79880544 is an abundant number, since it is smaller than the sum of its proper divisors (147280572).

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

79880544 is a wasteful number, since it uses less digits than its factorization.

79880544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277379 (or 277368 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 79880544 is about 8937.5916219080. The cubic root of 79880544 is about 430.6723643785.

The spelling of 79880544 in words is "seventy-nine million, eight hundred eighty thousand, five hundred forty-four".