394645523992 has 16 divisors (see below), whose sum is σ = 744499994040. Its totient is φ = 196112192256.

The previous prime is 394645523981. The next prime is 394645523999. The reversal of 394645523992 is 299325546493.

It is a self number, because there is not a number n which added to its sum of digits gives 394645523992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394645523999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151319833 + ... + 151322440.

Almost surely, 2^394645523992 is an apocalyptic number.

It is an amenable number.

394645523992 is a deficient number, since it is larger than the sum of its proper divisors (349854470048).

394645523992 is a wasteful number, since it uses less digits than its factorization.

394645523992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302642442 (or 302642438 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 61.

The spelling of 394645523992 in words is "three hundred ninety-four billion, six hundred forty-five million, five hundred twenty-three thousand, nine hundred ninety-two".