78943912 has 16 divisors (see below), whose sum is σ = 154455840. Its totient is φ = 37755696.

The previous prime is 78943877. The next prime is 78943913. The reversal of 78943912 is 21934987.

It is not an unprimeable number, because it can be changed into a prime (78943913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214338 + ... + 214705.

It is an arithmetic number, because the mean of its divisors is an integer number (9653490).

Almost surely, 2^78943912 is an apocalyptic number.

It is an amenable number.

78943912 is a deficient number, since it is larger than the sum of its proper divisors (75511928).

78943912 is a wasteful number, since it uses less digits than its factorization.

78943912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429072 (or 429068 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 78943912 is about 8885.0386605799. The cubic root of 78943912 is about 428.9824723922.

The spelling of 78943912 in words is "seventy-eight million, nine hundred forty-three thousand, nine hundred twelve".