400444844884 has 48 divisors (see below), whose sum is σ = 808868988928. Its totient is φ = 169910211168.

The previous prime is 400444844881. The next prime is 400444844903. The reversal of 400444844884 is 488448444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444844881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13156027 + ... + 13186429.

Almost surely, 2^400444844884 is an apocalyptic number.

It is an amenable number.

400444844884 is an abundant number, since it is smaller than the sum of its proper divisors (408424144044).

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

400444844884 is a wasteful number, since it uses less digits than its factorization.

400444844884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35084 (or 35082 counting only the distinct ones).

The product of its (nonzero) digits is 8388608, while the sum is 52.

The spelling of 400444844884 in words is "four hundred billion, four hundred forty-four million, eight hundred forty-four thousand, eight hundred eighty-four".