404404004404 has 12 divisors (see below), whose sum is σ = 707759692164. Its totient is φ = 202186949504.

The previous prime is 404404004357. The next prime is 404404004437. The reversal of 404404004404 is 404400404404.

It can be written as a sum of positive squares in 2 ways, for example, as 328899956004 + 75504048400 = 573498^2 + 274780^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3702619 + ... + 3810274.

It is an arithmetic number, because the mean of its divisors is an integer number (58979974347).

Almost surely, 2^404404004404 is an apocalyptic number.

It is an amenable number.

404404004404 is a deficient number, since it is larger than the sum of its proper divisors (303355687760).

404404004404 is a wasteful number, since it uses less digits than its factorization.

404404004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7526354 (or 7526352 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 404404004404 its reverse (404400404404), we get a palindrome (808804408808).

The spelling of 404404004404 in words is "four hundred four billion, four hundred four million, four thousand, four hundred four".