404044440 has 256 divisors, whose sum is σ = 1356289920. Its totient is φ = 95846400.

The previous prime is 404044429. The next prime is 404044499. The reversal of 404044440 is 44440404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 404044440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4000390 + ... + 4000490.

Almost surely, 2^404044440 is an apocalyptic number.

404044440 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 404044440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678144960).

404044440 is an abundant number, since it is smaller than the sum of its proper divisors (952245480).

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

404044440 is a wasteful number, since it uses less digits than its factorization.

404044440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 404044440 is about 20100.8566981609. The cubic root of 404044440 is about 739.2812841641.

Adding to 404044440 its reverse (44440404), we get a palindrome (448484844).

It can be divided in two parts, 40404 and 4440, that added together give a palindrome (44844).

The spelling of 404044440 in words is "four hundred four million, forty-four thousand, four hundred forty".