394472388 has 24 divisors (see below), whose sum is σ = 926087008. Its totient is φ = 130683456.

The previous prime is 394472383. The next prime is 394472399. The reversal of 394472388 is 883274493.

It is not an unprimeable number, because it can be changed into a prime (394472383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98881 + ... + 102792.

Almost surely, 2^394472388 is an apocalyptic number.

It is an amenable number.

394472388 is an abundant number, since it is smaller than the sum of its proper divisors (531614620).

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

394472388 is a wasteful number, since it uses less digits than its factorization.

394472388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201843 (or 201841 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 394472388 is about 19861.3289585566. The cubic root of 394472388 is about 733.3965619495.

The spelling of 394472388 in words is "three hundred ninety-four million, four hundred seventy-two thousand, three hundred eighty-eight".