394979536 has 40 divisors (see below), whose sum is σ = 904763520. Its totient is φ = 163438464.

The previous prime is 394979509. The next prime is 394979561. The reversal of 394979536 is 635979493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57556 + ... + 64051.

It is an arithmetic number, because the mean of its divisors is an integer number (22619088).

Almost surely, 2^394979536 is an apocalyptic number.

It is an amenable number.

394979536 is an abundant number, since it is smaller than the sum of its proper divisors (509783984).

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

394979536 is a wasteful number, since it uses less digits than its factorization.

394979536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121651 (or 121645 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 55.

The square root of 394979536 is about 19874.0920798913. The cubic root of 394979536 is about 733.7107210907.

The spelling of 394979536 in words is "three hundred ninety-four million, nine hundred seventy-nine thousand, five hundred thirty-six".