77938374 has 8 divisors (see below), whose sum is σ = 155876760. Its totient is φ = 25979456.

The previous prime is 77938363. The next prime is 77938381. The reversal of 77938374 is 47383977.

It is a happy number.

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

77938374 is an admirable number.

It is a congruent number.

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, 6494859 + ... + 6494870.

It is an arithmetic number, because the mean of its divisors is an integer number (19484595).

Almost surely, 2^77938374 is an apocalyptic number.

77938374 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77938374 is a wasteful number, since it uses less digits than its factorization.

77938374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12989734.

The product of its digits is 889056, while the sum is 48.

The square root of 77938374 is about 8828.2712917082. The cubic root of 77938374 is about 427.1533142217.

The spelling of 77938374 in words is "seventy-seven million, nine hundred thirty-eight thousand, three hundred seventy-four".