394164432 has 120 divisors (see below), whose sum is σ = 1170544128. Its totient is φ = 123552000.

The previous prime is 394164377. The next prime is 394164437. The reversal of 394164432 is 234461493.

It is a happy number.

394164432 is a `hidden beast` number, since 3 + 9 + 4 + 1 + 644 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394164437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201057 + ... + 203007.

Almost surely, 2^394164432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394164432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585272064).

394164432 is an abundant number, since it is smaller than the sum of its proper divisors (776379696).

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

394164432 is a wasteful number, since it uses less digits than its factorization.

394164432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2040 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 394164432 is about 19853.5747914576. The cubic root of 394164432 is about 733.2056633576.

The spelling of 394164432 in words is "three hundred ninety-four million, one hundred sixty-four thousand, four hundred thirty-two".