394004 has 12 divisors (see below), whose sum is σ = 742644. Its totient is φ = 181824.

The previous prime is 393997. The next prime is 394007. The reversal of 394004 is 400493.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 372100 = 148^2 + 610^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3737 + ... + 3840.

It is an arithmetic number, because the mean of its divisors is an integer number (61887).

2³⁹⁴⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

394004 is a deficient number, since it is larger than the sum of its proper divisors (348640).

394004 is a wasteful number, since it uses less digits than its factorization.

394004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7594 (or 7592 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 394004 is about 627.6973793159. The cubic root of 394004 is about 73.3106173903.

Adding to 394004 its reverse (400493), we get a palindrome (794497).

The spelling of 394004 in words is "three hundred ninety-four thousand, four".