404044040440 has 64 divisors (see below), whose sum is σ = 915178723200. Its totient is φ = 160537448448.

The previous prime is 404044040383. The next prime is 404044040453. The reversal of 404044040440 is 44040440404.

It is a junction number, because it is equal to n+sod(n) for n = 404044040399 and 404044040408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24603112 + ... + 24619528.

It is an arithmetic number, because the mean of its divisors is an integer number (14299667550).

Almost surely, 2^404044040440 is an apocalyptic number.

404044040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404044040440 is an abundant number, since it is smaller than the sum of its proper divisors (511134682760).

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

404044040440 is a wasteful number, since it uses less digits than its factorization.

404044040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20504 (or 20500 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 404044040440 its reverse (44040440404), we get a palindrome (448084480844).

The spelling of 404044040440 in words is "four hundred four billion, forty-four million, forty thousand, four hundred forty".