77886394 has 8 divisors (see below), whose sum is σ = 116994240. Its totient is φ = 38888316.

The previous prime is 77886359. The next prime is 77886407. The reversal of 77886394 is 49368877.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25644 + ... + 28519.

It is an arithmetic number, because the mean of its divisors is an integer number (14624280).

Almost surely, 2^77886394 is an apocalyptic number.

77886394 is a deficient number, since it is larger than the sum of its proper divisors (39107846).

77886394 is a wasteful number, since it uses less digits than its factorization.

77886394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54884.

The product of its digits is 2032128, while the sum is 52.

The square root of 77886394 is about 8825.3268494714. The cubic root of 77886394 is about 427.0583316260.

The spelling of 77886394 in words is "seventy-seven million, eight hundred eighty-six thousand, three hundred ninety-four".