290404 has 12 divisors (see below), whose sum is σ = 515200. Its totient is φ = 143208.

The previous prime is 290399. The next prime is 290419. The reversal of 290404 is 404092.

290404 is nontrivially palindromic in base 16.

290404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

290404 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144 + ... + 775.

2²⁹⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

290404 is a deficient number, since it is larger than the sum of its proper divisors (224796).

290404 is a wasteful number, since it uses less digits than its factorization.

290404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 290404 is about 538.8914547476. The cubic root of 290404 is about 66.2217822158.

Adding to 290404 its reverse (404092), we get a palindrome (694496).

The spelling of 290404 in words is "two hundred ninety thousand, four hundred four".