396839934 has 24 divisors (see below), whose sum is σ = 863003232. Its totient is φ = 131790240.

The previous prime is 396839923. The next prime is 396839981. The reversal of 396839934 is 439938693.

It is a happy number.

It is a congruent number.

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, 35799 + ... + 45554.

It is an arithmetic number, because the mean of its divisors is an integer number (35958468).

Almost surely, 2^396839934 is an apocalyptic number.

396839934 is an abundant number, since it is smaller than the sum of its proper divisors (466163298).

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

396839934 is a wasteful number, since it uses less digits than its factorization.

396839934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81632 (or 81629 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 396839934 is about 19920.8416990849. The cubic root of 396839934 is about 734.8608705141.

The spelling of 396839934 in words is "three hundred ninety-six million, eight hundred thirty-nine thousand, nine hundred thirty-four".