400444484844 has 24 divisors (see below), whose sum is σ = 989333433648. Its totient is φ = 125629642240.

The previous prime is 400444484831. The next prime is 400444484849. The reversal of 400444484844 is 448484444004.

It is a junction number, because it is equal to n+sod(n) for n = 400444484793 and 400444484802.

It is not an unprimeable number, because it can be changed into a prime (400444484849) 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 7 ways as a sum of consecutive naturals, for example, 981481377 + ... + 981481784.

It is an arithmetic number, because the mean of its divisors is an integer number (41222226402).

Almost surely, 2^400444484844 is an apocalyptic number.

It is an amenable number.

400444484844 is an abundant number, since it is smaller than the sum of its proper divisors (588888948804).

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

400444484844 is a wasteful number, since it uses less digits than its factorization.

400444484844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962963185 (or 1962963183 counting only the distinct ones).

The product of its (nonzero) digits is 4194304, while the sum is 48.

The spelling of 400444484844 in words is "four hundred billion, four hundred forty-four million, four hundred eighty-four thousand, eight hundred forty-four".