78916844 has 12 divisors (see below), whose sum is σ = 138684000. Its totient is φ = 39292848.

The previous prime is 78916837. The next prime is 78916853. The reversal of 78916844 is 44861987.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40319 + ... + 42230.

It is an arithmetic number, because the mean of its divisors is an integer number (11557000).

Almost surely, 2^78916844 is an apocalyptic number.

It is an amenable number.

78916844 is a deficient number, since it is larger than the sum of its proper divisors (59767156).

78916844 is a wasteful number, since it uses less digits than its factorization.

78916844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82792 (or 82790 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 78916844 is about 8883.5152951971. The cubic root of 78916844 is about 428.9334374734.

The spelling of 78916844 in words is "seventy-eight million, nine hundred sixteen thousand, eight hundred forty-four".