394979776 has 28 divisors (see below), whose sum is σ = 793719520. Its totient is φ = 194987520.

The previous prime is 394979749. The next prime is 394979821. The reversal of 394979776 is 677979493.

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, 34005 + ... + 44116.

Almost surely, 2^394979776 is an apocalyptic number.

It is an amenable number.

394979776 is an abundant number, since it is smaller than the sum of its proper divisors (398739744).

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

394979776 is an equidigital number, since it uses as much as digits as its factorization.

394979776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78212 (or 78202 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 61.

The square root of 394979776 is about 19874.0981179021. The cubic root of 394979776 is about 733.7108696980.

The spelling of 394979776 in words is "three hundred ninety-four million, nine hundred seventy-nine thousand, seven hundred seventy-six".