400444800008 has 32 divisors (see below), whose sum is σ = 819118224000. Its totient is φ = 182014455360.

The previous prime is 400444799999. The next prime is 400444800031. The reversal of 400444800008 is 800008444004.

It is a happy 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, 3801473 + ... + 3905391.

It is an arithmetic number, because the mean of its divisors is an integer number (25597444500).

Almost surely, 2^400444800008 is an apocalyptic number.

It is an amenable number.

400444800008 is an abundant number, since it is smaller than the sum of its proper divisors (418673423992).

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

400444800008 is a wasteful number, since it uses less digits than its factorization.

400444800008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147725 (or 147721 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The spelling of 400444800008 in words is "four hundred billion, four hundred forty-four million, eight hundred thousand, eight".