404442440016 has 80 divisors (see below), whose sum is σ = 1054811934144. Its totient is φ = 133524099072.

The previous prime is 404442439979. The next prime is 404442440021. The reversal of 404442440016 is 610044244404.

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, 44868726 + ... + 44877738.

Almost surely, 2^404442440016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404442440016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527405967072).

404442440016 is an abundant number, since it is smaller than the sum of its proper divisors (650369494128).

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

404442440016 is a wasteful number, since it uses less digits than its factorization.

404442440016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868 (or 17862 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

The spelling of 404442440016 in words is "four hundred four billion, four hundred forty-two million, four hundred forty thousand, sixteen".