394564360 has 32 divisors (see below), whose sum is σ = 895636440. Its totient is φ = 156427264.

The previous prime is 394564349. The next prime is 394564369. The reversal of 394564360 is 63465493.

It can be written as a sum of positive squares in 4 ways, for example, as 295083684 + 99480676 = 17178^2 + 9974^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (394564369) 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, 39127 + ... + 48166.

Almost surely, 2^394564360 is an apocalyptic number.

It is an amenable number.

394564360 is an abundant number, since it is smaller than the sum of its proper divisors (501072080).

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

394564360 is a wasteful number, since it uses less digits than its factorization.

394564360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87417 (or 87413 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 394564360 is about 19863.6441772400. The cubic root of 394564360 is about 733.4535551292.

The spelling of 394564360 in words is "three hundred ninety-four million, five hundred sixty-four thousand, three hundred sixty".