404400888400 has 60 divisors (see below), whose sum is σ = 974697463584. Its totient is φ = 161240176000.

The previous prime is 404400888391. The next prime is 404400888403. The reversal of 404400888400 is 4888004404.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404400888403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1501006 + ... + 1749805.

Almost surely, 2^404400888400 is an apocalyptic number.

404400888400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404400888400 is an abundant number, since it is smaller than the sum of its proper divisors (570296575184).

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

404400888400 is a wasteful number, since it uses less digits than its factorization.

404400888400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251140 (or 3251129 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 404400888400 in words is "four hundred four billion, four hundred million, eight hundred eighty-eight thousand, four hundred".