394578496 has 63 divisors (see below), whose sum is σ = 852317193. Its totient is φ = 181159680.

The previous prime is 394578493. The next prime is 394578511. The reversal of 394578496 is 694875493.

The square root of 394578496 is 19864.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 58369600 + 336208896 = 7640^2 + 18336^2 .

Its product of digits (6531840) is a multiple of the sum of its prime factors (420).

It is not an unprimeable number, because it can be changed into a prime (394578493) 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 8 ways as a sum of consecutive naturals, for example, 2065761 + ... + 2065951.

Almost surely, 2^394578496 is an apocalyptic number.

394578496 is the 19864-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394578496

394578496 is an abundant number, since it is smaller than the sum of its proper divisors (457738697).

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

394578496 is an equidigital number, since it uses as much as digits as its factorization.

394578496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 206 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The cubic root of 394578496 is about 733.4623141359.

The spelling of 394578496 in words is "three hundred ninety-four million, five hundred seventy-eight thousand, four hundred ninety-six".