404442104 has 64 divisors (see below), whose sum is σ = 879400800. Its totient is φ = 172339200.

The previous prime is 404442013. The next prime is 404442187. The reversal of 404442104 is 401244404.

It is a self number, because there is not a number n which added to its sum of digits gives 404442104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611534 + ... + 612194.

Almost surely, 2^404442104 is an apocalyptic number.

404442104 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 404442104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439700400).

404442104 is an abundant number, since it is smaller than the sum of its proper divisors (474958696).

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

404442104 is a wasteful number, since it uses less digits than its factorization.

404442104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 404442104 is about 20110.7459831802. The cubic root of 404442104 is about 739.5237402972.

Adding to 404442104 its reverse (401244404), we get a palindrome (805686508).

The spelling of 404442104 in words is "four hundred four million, four hundred forty-two thousand, one hundred four".