394933504 has 72 divisors (see below), whose sum is σ = 913586240. Its totient is φ = 166883328.

The previous prime is 394933501. The next prime is 394933507. The reversal of 394933504 is 405339493.

It is an interprime number because it is at equal distance from previous prime (394933501) and next prime (394933507).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394933501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129307 + ... + 132325.

Almost surely, 2^394933504 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 394933504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456793120).

394933504 is an abundant number, since it is smaller than the sum of its proper divisors (518652736).

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

394933504 is an equidigital number, since it uses as much as digits as its factorization.

394933504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 394933504 is about 19872.9339555084. The cubic root of 394933504 is about 733.6822170958.

The spelling of 394933504 in words is "three hundred ninety-four million, nine hundred thirty-three thousand, five hundred four".