404444040880 has 80 divisors (see below), whose sum is σ = 1025968039200. Its totient is φ = 147048929280.

The previous prime is 404444040877. The next prime is 404444040893. The reversal of 404444040880 is 88040444404.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×404444040880² (a number of 24 digits) contains 22 as substring.

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

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, 6718756 + ... + 6778684.

It is an arithmetic number, because the mean of its divisors is an integer number (12824600490).

Almost surely, 2^404444040880 is an apocalyptic number.

404444040880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404444040880 is an abundant number, since it is smaller than the sum of its proper divisors (621523998320).

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

404444040880 is a wasteful number, since it uses less digits than its factorization.

404444040880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67622 (or 67616 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 40.

The spelling of 404444040880 in words is "four hundred four billion, four hundred forty-four million, forty thousand, eight hundred eighty".