394573642 has 16 divisors (see below), whose sum is σ = 613354752. Its totient is φ = 190172160.

The previous prime is 394573631. The next prime is 394573657. The reversal of 394573642 is 246375493.

It is a super-2 number, since 2×394573642² = 311376717922288328, which contains 22 as substring.

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, 3553 + ... + 28315.

It is an arithmetic number, because the mean of its divisors is an integer number (38334672).

Almost surely, 2^394573642 is an apocalyptic number.

394573642 is a deficient number, since it is larger than the sum of its proper divisors (218781110).

394573642 is a wasteful number, since it uses less digits than its factorization.

394573642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25053.

The product of its digits is 544320, while the sum is 43.

The square root of 394573642 is about 19863.8778187946. The cubic root of 394573642 is about 733.4593065040.

The spelling of 394573642 in words is "three hundred ninety-four million, five hundred seventy-three thousand, six hundred forty-two".