400440120044 has 6 divisors (see below), whose sum is σ = 700770210084. Its totient is φ = 200220060020.

The previous prime is 400440120013. The next prime is 400440120049. The reversal of 400440120044 is 440021044004.

It is not an unprimeable number, because it can be changed into a prime (400440120049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055015002 + ... + 50055015009.

It is an arithmetic number, because the mean of its divisors is an integer number (116795035014).

Almost surely, 2^400440120044 is an apocalyptic number.

It is an amenable number.

400440120044 is a deficient number, since it is larger than the sum of its proper divisors (300330090040).

400440120044 is a wasteful number, since it uses less digits than its factorization.

400440120044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100110030015 (or 100110030013 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 400440120044 its reverse (440021044004), we get a palindrome (840461164048).

The spelling of 400440120044 in words is "four hundred billion, four hundred forty million, one hundred twenty thousand, forty-four".