444400444040 has 64 divisors (see below), whose sum is σ = 1142868303360. Its totient is φ = 152349292800.

The previous prime is 444400444003. The next prime is 444400444073. The reversal of 444400444040 is 40444004444.

It is a junction number, because it is equal to n+sod(n) for n = 444400443988 and 444400444006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2646590 + ... + 2809490.

It is an arithmetic number, because the mean of its divisors is an integer number (17857317240).

Almost surely, 2^444400444040 is an apocalyptic number.

444400444040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444400444040 is an abundant number, since it is smaller than the sum of its proper divisors (698467859320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444400444040 is a wasteful number, since it uses less digits than its factorization.

444400444040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172662 (or 172658 counting only the distinct ones).

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

Adding to 444400444040 its reverse (40444004444), we get a palindrome (484844448484).

The spelling of 444400444040 in words is "four hundred forty-four billion, four hundred million, four hundred forty-four thousand, forty".