404400404444 has 12 divisors (see below), whose sum is σ = 718263405384. Its totient is φ = 199182288624.

The previous prime is 404400404329. The next prime is 404400404477. The reversal of 404400404444 is 444404004404.

It is a super-2 number, since 2×404400404444² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404400404444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754478099 + ... + 754478634.

It is an arithmetic number, because the mean of its divisors is an integer number (59855283782).

Almost surely, 2^404400404444 is an apocalyptic number.

It is an amenable number.

404400404444 is a deficient number, since it is larger than the sum of its proper divisors (313863000940).

404400404444 is a wasteful number, since it uses less digits than its factorization.

404400404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508956804 (or 1508956802 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 404400404444 its reverse (444404004404), we get a palindrome (848804408848).

The spelling of 404400404444 in words is "four hundred four billion, four hundred million, four hundred four thousand, four hundred forty-four".