400440404044 has 6 divisors (see below), whose sum is σ = 700770707084. Its totient is φ = 200220202020.

The previous prime is 400440403973. The next prime is 400440404053. The reversal of 400440404044 is 440404044004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055050502 + ... + 50055050509.

Almost surely, 2^400440404044 is an apocalyptic number.

It is an amenable number.

400440404044 is a deficient number, since it is larger than the sum of its proper divisors (300330303040).

400440404044 is a wasteful number, since it uses less digits than its factorization.

400440404044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100110101015 (or 100110101013 counting only the distinct ones).

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

Adding to 400440404044 its reverse (440404044004), we get a palindrome (840844448048).

The spelling of 400440404044 in words is "four hundred billion, four hundred forty million, four hundred four thousand, forty-four".