77412393 has 12 divisors (see below), whose sum is σ = 112382400. Its totient is φ = 51347736.

The previous prime is 77412367. The next prime is 77412421. The reversal of 77412393 is 39321477.

It is not a de Polignac number, because 77412393 - 2²⁰ = 76363817 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77412353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19821 + ... + 23402.

It is an arithmetic number, because the mean of its divisors is an integer number (9365200).

Almost surely, 2^77412393 is an apocalyptic number.

It is an amenable number.

77412393 is a deficient number, since it is larger than the sum of its proper divisors (34970007).

77412393 is a wasteful number, since it uses less digits than its factorization.

77412393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43428 (or 43425 counting only the distinct ones).

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

The square root of 77412393 is about 8798.4312806318. The cubic root of 77412393 is about 426.1902377207.

The spelling of 77412393 in words is "seventy-seven million, four hundred twelve thousand, three hundred ninety-three".