404630 has 16 divisors (see below), whose sum is σ = 746064. Its totient is φ = 157920.

The previous prime is 404597. The next prime is 404671. The reversal of 404630 is 36404.

It is a Curzon number.

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 404599 and 404608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 900.

It is an arithmetic number, because the mean of its divisors is an integer number (46629).

2⁴⁰⁴⁶³⁰ is an apocalyptic number.

404630 is a deficient number, since it is larger than the sum of its proper divisors (341434).

404630 is a wasteful number, since it uses less digits than its factorization.

404630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 404630 is about 636.1053371887. The cubic root of 404630 is about 73.9638245388.

The spelling of 404630 in words is "four hundred four thousand, six hundred thirty".