440904 has 16 divisors (see below), whose sum is σ = 1102320. Its totient is φ = 146960.

The previous prime is 440903. The next prime is 440911. The reversal of 440904 is 409044.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (440903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9162 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (68895).

2⁴⁴⁰⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

440904 is an abundant number, since it is smaller than the sum of its proper divisors (661416).

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

440904 is a wasteful number, since it uses less digits than its factorization.

440904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380 (or 18376 counting only the distinct ones).

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

The square root of 440904 is about 664.0060240691. The cubic root of 440904 is about 76.1111025075. Note that the first 4 decimals are identical.

Adding to 440904 its reverse (409044), we get a palindrome (849948).

The spelling of 440904 in words is "four hundred forty thousand, nine hundred four".