404440000 has 70 divisors (see below), whose sum is σ = 1002978944. Its totient is φ = 161760000.

The previous prime is 404439989. The next prime is 404440019. The reversal of 404440000 is 44404.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34945 + ... + 45055.

Almost surely, 2^404440000 is an apocalyptic number.

404440000 is a gapful number since it is divisible by the number (40) 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 404440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501489472).

404440000 is an abundant number, since it is smaller than the sum of its proper divisors (598538944).

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

404440000 is an equidigital number, since it uses as much as digits as its factorization.

404440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 404440000 is about 20110.6936727702. The cubic root of 404440000 is about 739.5224579047.

Adding to 404440000 its reverse (44404), we get a palindrome (404484404).

It can be divided in two parts, 4044 and 40000, that added together give a palindrome (44044).

The spelling of 404440000 in words is "four hundred four million, four hundred forty thousand".