404440040444 has 24 divisors (see below), whose sum is σ = 772190017536. Its totient is φ = 183817998000.

The previous prime is 404440040437. The next prime is 404440040447. The reversal of 404440040444 is 444040044404.

It is a self number, because there is not a number n which added to its sum of digits gives 404440040444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404440040447) 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, 9662 + ... + 899429.

It is an arithmetic number, because the mean of its divisors is an integer number (32174584064).

Almost surely, 2^404440040444 is an apocalyptic number.

404440040444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404440040444 is a deficient number, since it is larger than the sum of its proper divisors (367749977092).

404440040444 is a wasteful number, since it uses less digits than its factorization.

404440040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919217 (or 919215 counting only the distinct ones).

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

Adding to 404440040444 its reverse (444040044404), we get a palindrome (848480084848).

It can be divided in two parts, 4044400 and 40444, that multiplied together give a square (163571713600 = 404440²).

The spelling of 404440040444 in words is "four hundred four billion, four hundred forty million, forty thousand, four hundred forty-four".