40000220444 has 24 divisors (see below), whose sum is σ = 70528857840. Its totient is φ = 19849191296.

The previous prime is 40000220441. The next prime is 40000220549. The reversal of 40000220444 is 44402200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000220441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3297839 + ... + 3309945.

It is an arithmetic number, because the mean of its divisors is an integer number (2938702410).

Almost surely, 2^40000220444 is an apocalyptic number.

It is an amenable number.

40000220444 is a deficient number, since it is larger than the sum of its proper divisors (30528637396).

40000220444 is a wasteful number, since it uses less digits than its factorization.

40000220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18277 (or 18275 counting only the distinct ones).

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

Adding to 40000220444 its reverse (44402200004), we get a palindrome (84402420448).

The spelling of 40000220444 in words is "forty billion, two hundred twenty thousand, four hundred forty-four".