394279404 has 12 divisors (see below), whose sum is σ = 919985304. Its totient is φ = 131426464.

The previous prime is 394279399. The next prime is 394279423. The reversal of 394279404 is 404972493.

It is a tau number, because it is divible by the number of its divisors (12).

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, 16428297 + ... + 16428320.

It is an arithmetic number, because the mean of its divisors is an integer number (76665442).

Almost surely, 2^394279404 is an apocalyptic number.

It is an amenable number.

394279404 is an abundant number, since it is smaller than the sum of its proper divisors (525705900).

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

394279404 is a wasteful number, since it uses less digits than its factorization.

394279404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32856624 (or 32856622 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 394279404 is about 19856.4700790448. The cubic root of 394279404 is about 733.2769448837.

The spelling of 394279404 in words is "three hundred ninety-four million, two hundred seventy-nine thousand, four hundred four".