400444044044 has 12 divisors (see below), whose sum is σ = 764484084168. Its totient is φ = 182020020000.

The previous prime is 400444043957. The next prime is 400444044073. The reversal of 400444044044 is 440440444004.

It is a self number, because there is not a number n which added to its sum of digits gives 400444044044.

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, 4550500457 + ... + 4550500544.

It is an arithmetic number, because the mean of its divisors is an integer number (63707007014).

Almost surely, 2^400444044044 is an apocalyptic number.

400444044044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400444044044 is a deficient number, since it is larger than the sum of its proper divisors (364040040124).

400444044044 is a wasteful number, since it uses less digits than its factorization.

400444044044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9101001016 (or 9101001014 counting only the distinct ones).

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

Adding to 400444044044 its reverse (440440444004), we get a palindrome (840884488048).

The spelling of 400444044044 in words is "four hundred billion, four hundred forty-four million, forty-four thousand, forty-four".