490404 has 12 divisors (see below), whose sum is σ = 1144304. Its totient is φ = 163464.

The previous prime is 490393. The next prime is 490417. The reversal of 490404 is 404094.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

490404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20422 + ... + 20445.

2⁴⁹⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

490404 is an abundant number, since it is smaller than the sum of its proper divisors (653900).

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

490404 is a wasteful number, since it uses less digits than its factorization.

490404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40874 (or 40872 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 490404 is about 700.2885119720. The cubic root of 490404 is about 78.8590125431.

Adding to 490404 its reverse (404094), we get a palindrome (894498).

The spelling of 490404 in words is "four hundred ninety thousand, four hundred four".