404442004 has 24 divisors (see below), whose sum is σ = 749216160. Its totient is φ = 190704864.

The previous prime is 404441981. The next prime is 404442013. The reversal of 404442004 is 400244404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35554 + ... + 45529.

It is an arithmetic number, because the mean of its divisors is an integer number (31217340).

Almost surely, 2^404442004 is an apocalyptic number.

It is an amenable number.

404442004 is a deficient number, since it is larger than the sum of its proper divisors (344774156).

404442004 is a wasteful number, since it uses less digits than its factorization.

404442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81159 (or 81157 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 404442004 is about 20110.7434969471. The cubic root of 404442004 is about 739.5236793471.

Adding to 404442004 its reverse (400244404), we get a palindrome (804686408).

The spelling of 404442004 in words is "four hundred four million, four hundred forty-two thousand, four".