404400044045 has 16 divisors (see below), whose sum is σ = 531544077360. Its totient is φ = 293989807104.

The previous prime is 404400044033. The next prime is 404400044071. The reversal of 404400044045 is 540440004404.

It can be written as a sum of positive squares in 8 ways, for example, as 26936030884 + 377464013161 = 164122^2 + 614381^2 .

It is a cyclic number.

It is not a de Polignac number, because 404400044045 - 2²⁸ = 404131608589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 404400043999 and 404400044017.

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 15 ways as a sum of consecutive naturals, for example, 82025942 + ... + 82030871.

It is an arithmetic number, because the mean of its divisors is an integer number (33221504835).

Almost surely, 2^404400044045 is an apocalyptic number.

It is an amenable number.

404400044045 is a deficient number, since it is larger than the sum of its proper divisors (127144033315).

404400044045 is a wasteful number, since it uses less digits than its factorization.

404400044045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164056864.

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 404400044045 its reverse (540440004404), we get a palindrome (944840048449).

The spelling of 404400044045 in words is "four hundred four billion, four hundred million, forty-four thousand, forty-five".