400444022224 has 20 divisors (see below), whose sum is σ = 800888045440. Its totient is φ = 193763236320.

The previous prime is 400444022201. The next prime is 400444022227. The reversal of 400444022224 is 422220444004.

400444022224 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 400444022192 and 400444022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444022227) 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, 403672914 + ... + 403673905.

It is an arithmetic number, because the mean of its divisors is an integer number (40044402272).

Almost surely, 2^400444022224 is an apocalyptic number.

It is an amenable number.

400444022224 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400444022224 is a wasteful number, since it uses less digits than its factorization.

400444022224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807346858 (or 807346852 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 400444022224 its reverse (422220444004), we get a palindrome (822664466228).

The spelling of 400444022224 in words is "four hundred billion, four hundred forty-four million, twenty-two thousand, two hundred twenty-four".