394404968200 has 48 divisors (see below), whose sum is σ = 926445117780. Its totient is φ = 156135567360.

The previous prime is 394404968183. The next prime is 394404968213. The reversal of 394404968200 is 2869404493.

It can be written as a sum of positive squares in 6 ways, for example, as 96749614116 + 297655354084 = 311046^2 + 545578^2 .

It is a super-2 number, since 2×394404968200² (a number of 24 digits) contains 22 as substring.

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

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, 10145677 + ... + 10184476.

Almost surely, 2^394404968200 is an apocalyptic number.

It is an amenable number.

394404968200 is an abundant number, since it is smaller than the sum of its proper divisors (532040149580).

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

394404968200 is a wasteful number, since it uses less digits than its factorization.

394404968200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330266 (or 20330257 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 394404968200 in words is "three hundred ninety-four billion, four hundred four million, nine hundred sixty-eight thousand, two hundred".