400040004044 has 12 divisors (see below), whose sum is σ = 716350705224. Its totient is φ = 195368373984.

The previous prime is 400040003983. The next prime is 400040004097. The reversal of 400040004044 is 440400040004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162906817 + ... + 1162907160.

It is an arithmetic number, because the mean of its divisors is an integer number (59695892102).

Almost surely, 2^400040004044 is an apocalyptic number.

It is an amenable number.

400040004044 is a deficient number, since it is larger than the sum of its proper divisors (316310701180).

400040004044 is a wasteful number, since it uses less digits than its factorization.

400040004044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325814024 (or 2325814022 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 400040004044 its reverse (440400040004), we get a palindrome (840440044048).

The spelling of 400040004044 in words is "four hundred billion, forty million, four thousand, forty-four".