404440044440 has 32 divisors (see below), whose sum is σ = 910584614160. Its totient is φ = 161670326400.

The previous prime is 404440044439. The next prime is 404440044461. The reversal of 404440044440 is 44440044404.

It is a junction number, because it is equal to n+sod(n) for n = 404440044397 and 404440044406.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3240851 + ... + 3363330.

Almost surely, 2^404440044440 is an apocalyptic number.

404440044440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404440044440 is an abundant number, since it is smaller than the sum of its proper divisors (506144569720).

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

404440044440 is a wasteful number, since it uses less digits than its factorization.

404440044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605723 (or 6605719 counting only the distinct ones).

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

Adding to 404440044440 its reverse (44440044404), we get a palindrome (448880088844).

The spelling of 404440044440 in words is "four hundred four billion, four hundred forty million, forty-four thousand, four hundred forty".