390386394 has 24 divisors (see below), whose sum is σ = 854560980. Its totient is φ = 128786688.

The previous prime is 390386363. The next prime is 390386431. The reversal of 390386394 is 493683093.

390386394 is a `hidden beast` number, since 3 + 9 + 0 + 3 + 8 + 639 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 389549169 + 837225 = 19737^2 + 915^2 .

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, 110049 + ... + 113540.

Almost surely, 2^390386394 is an apocalyptic number.

390386394 is an abundant number, since it is smaller than the sum of its proper divisors (464174586).

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

390386394 is a wasteful number, since it uses less digits than its factorization.

390386394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223694 (or 223691 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 390386394 is about 19758.1981465922. The cubic root of 390386394 is about 730.8555640932.

The spelling of 390386394 in words is "three hundred ninety million, three hundred eighty-six thousand, three hundred ninety-four".