394953538 has 32 divisors (see below), whose sum is σ = 694526976. Its totient is φ = 164919888.

The previous prime is 394953529. The next prime is 394953557. The reversal of 394953538 is 835359493.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 394953491 and 394953500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446845 + ... + 447727.

It is an arithmetic number, because the mean of its divisors is an integer number (21703968).

Almost surely, 2^394953538 is an apocalyptic number.

394953538 is a deficient number, since it is larger than the sum of its proper divisors (299573438).

394953538 is a wasteful number, since it uses less digits than its factorization.

394953538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678.

The product of its digits is 1749600, while the sum is 49.

The square root of 394953538 is about 19873.4380015135. The cubic root of 394953538 is about 733.6946228475.

The spelling of 394953538 in words is "three hundred ninety-four million, nine hundred fifty-three thousand, five hundred thirty-eight".