404450904 has 128 divisors (see below), whose sum is σ = 1196052480. Its totient is φ = 112358400.

The previous prime is 404450903. The next prime is 404450947. The reversal of 404450904 is 409054404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404450903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655204 + ... + 655820.

It is an arithmetic number, because the mean of its divisors is an integer number (9344160).

Almost surely, 2^404450904 is an apocalyptic number.

404450904 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404450904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598026240).

404450904 is an abundant number, since it is smaller than the sum of its proper divisors (791601576).

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

404450904 is a wasteful number, since it uses less digits than its factorization.

404450904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 404450904 is about 20110.9647704927. The cubic root of 404450904 is about 739.5291038681.

The spelling of 404450904 in words is "four hundred four million, four hundred fifty thousand, nine hundred four".