404400888440 has 32 divisors (see below), whose sum is σ = 910003898160. Its totient is φ = 161742240000.

The previous prime is 404400888433. The next prime is 404400888607. The reversal of 404400888440 is 44888004404.

It is a super-2 number, since 2×404400888440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404400888391 and 404400888400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201566 + ... + 921645.

Almost surely, 2^404400888440 is an apocalyptic number.

404400888440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404400888440 is an abundant number, since it is smaller than the sum of its proper divisors (505603009720).

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

404400888440 is a wasteful number, since it uses less digits than its factorization.

404400888440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132223 (or 1132219 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 44.

The spelling of 404400888440 in words is "four hundred four billion, four hundred million, eight hundred eighty-eight thousand, four hundred forty".