404836 has 6 divisors (see below), whose sum is σ = 708470. Its totient is φ = 202416.

The previous prime is 404827. The next prime is 404837. The reversal of 404836 is 638404.

It can be written as a sum of positive squares in only one way, i.e., 295936 + 108900 = 544^2 + 330^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 404836.

It is not an unprimeable number, because it can be changed into a prime (404837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50601 + ... + 50608.

2⁴⁰⁴⁸³⁶ is an apocalyptic number.

It is an amenable number.

404836 is a deficient number, since it is larger than the sum of its proper divisors (303634).

404836 is a wasteful number, since it uses less digits than its factorization.

404836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101213 (or 101211 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 404836 is about 636.2672394521. The cubic root of 404836 is about 73.9763742451.

The spelling of 404836 in words is "four hundred four thousand, eight hundred thirty-six".