404004040444 has 24 divisors (see below), whose sum is σ = 724316392800. Its totient is φ = 197057387520.

The previous prime is 404004040441. The next prime is 404004040471. The reversal of 404004040444 is 444040400404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404004040441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1816812 + ... + 2027020.

It is an arithmetic number, because the mean of its divisors is an integer number (30179849700).

Almost surely, 2^404004040444 is an apocalyptic number.

It is an amenable number.

404004040444 is a deficient number, since it is larger than the sum of its proper divisors (320312352356).

404004040444 is a wasteful number, since it uses less digits than its factorization.

404004040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221973 (or 221971 counting only the distinct ones).

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

Adding to 404004040444 its reverse (444040400404), we get a palindrome (848044440848).

The spelling of 404004040444 in words is "four hundred four billion, four million, forty thousand, four hundred forty-four".