393604 has 12 divisors (see below), whose sum is σ = 725200. Its totient is φ = 186408.

The previous prime is 393593. The next prime is 393611. The reversal of 393604 is 406393.

It is an unprimeable number.

393604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514 + ... + 2665.

2³⁹³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

393604 is a deficient number, since it is larger than the sum of its proper divisors (331596).

393604 is a wasteful number, since it uses less digits than its factorization.

393604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202 (or 5200 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 393604 is about 627.3786735298. The cubic root of 393604 is about 73.2858002344.

Adding to 393604 its reverse (406393), we get a palindrome (799997).

The spelling of 393604 in words is "three hundred ninety-three thousand, six hundred four".