400404442444 has 12 divisors (see below), whose sum is σ = 700721216944. Its totient is φ = 200198380464.

The previous prime is 400404442441. The next prime is 400404442457. The reversal of 400404442444 is 444244404004.

It is not an unprimeable number, because it can be changed into a prime (400404442441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718887 + ... + 1147870.

Almost surely, 2^400404442444 is an apocalyptic number.

It is an amenable number.

400404442444 is a deficient number, since it is larger than the sum of its proper divisors (300316774500).

400404442444 is a wasteful number, since it uses less digits than its factorization.

400404442444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920384 (or 1920382 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 400404442444 its reverse (444244404004), we get a palindrome (844648846448).

The spelling of 400404442444 in words is "four hundred billion, four hundred four million, four hundred forty-two thousand, four hundred forty-four".