77393412 has 36 divisors (see below), whose sum is σ = 196000896. Its totient is φ = 25749360.

The previous prime is 77393399. The next prime is 77393423. The reversal of 77393412 is 21439377.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 21013 + ... + 24419.

Almost surely, 2^77393412 is an apocalyptic number.

It is an amenable number.

77393412 is an abundant number, since it is smaller than the sum of its proper divisors (118607484).

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

77393412 is a wasteful number, since it uses less digits than its factorization.

77393412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048 (or 4043 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 77393412 is about 8797.3525563092. The cubic root of 77393412 is about 426.1554018766.

The spelling of 77393412 in words is "seventy-seven million, three hundred ninety-three thousand, four hundred twelve".