394242993604 has 12 divisors (see below), whose sum is σ = 692788000828. Its totient is φ = 196303564800.

The previous prime is 394242993581. The next prime is 394242993619. The reversal of 394242993604 is 406399242493.

It can be written as a sum of positive squares in 2 ways, for example, as 307412584704 + 86830408900 = 554448^2 + 294670^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 204481917 + ... + 204483844.

Almost surely, 2^394242993604 is an apocalyptic number.

It is an amenable number.

394242993604 is a deficient number, since it is larger than the sum of its proper divisors (298545007224).

394242993604 is a wasteful number, since it uses less digits than its factorization.

394242993604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408966006 (or 408966004 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 394242993604 in words is "three hundred ninety-four billion, two hundred forty-two million, nine hundred ninety-three thousand, six hundred four".