79985376 has 72 divisors (see below), whose sum is σ = 228795840. Its totient is φ = 26505216.

The previous prime is 79985359. The next prime is 79985419. The reversal of 79985376 is 67358997.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×79985376² = 12795320747722752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54865 + ... + 56303.

It is an arithmetic number, because the mean of its divisors is an integer number (3177720).

Almost surely, 2^79985376 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 79985376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114397920).

79985376 is an abundant number, since it is smaller than the sum of its proper divisors (148810464).

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

79985376 is a wasteful number, since it uses less digits than its factorization.

79985376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1637 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 79985376 is about 8943.4543661831. The cubic root of 79985376 is about 430.8606810290.

The spelling of 79985376 in words is "seventy-nine million, nine hundred eighty-five thousand, three hundred seventy-six".