40004044100 has 18 divisors (see below), whose sum is σ = 86808775914. Its totient is φ = 16001617600.

The previous prime is 40004044099. The next prime is 40004044169. The reversal of 40004044100 is 144040004.

It can be written as a sum of positive squares in 3 ways, for example, as 1512743236 + 38491300864 = 38894^2 + 196192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200020121 + ... + 200020320.

It is an arithmetic number, because the mean of its divisors is an integer number (4822709773).

Almost surely, 2^40004044100 is an apocalyptic number.

It is an amenable number.

40004044100 is an abundant number, since it is smaller than the sum of its proper divisors (46804731814).

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

40004044100 is a wasteful number, since it uses less digits than its factorization.

40004044100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400040455 (or 400040448 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 40004044100 its reverse (144040004), we get a palindrome (40148084104).

The spelling of 40004044100 in words is "forty billion, four million, forty-four thousand, one hundred".