4002444044420 has 12 divisors (see below), whose sum is σ = 8405132493324. Its totient is φ = 1600977617760.

The previous prime is 4002444044419. The next prime is 4002444044441. The reversal of 4002444044420 is 244404442004.

It can be written as a sum of positive squares in 2 ways, for example, as 1762075714624 + 2240368329796 = 1327432^2 + 1496786^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100061101091 + ... + 100061101130.

It is an arithmetic number, because the mean of its divisors is an integer number (700427707777).

Almost surely, 2^{4002444044420} is an apocalyptic number.

It is an amenable number.

4002444044420 is an abundant number, since it is smaller than the sum of its proper divisors (4402688448904).

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

4002444044420 is a wasteful number, since it uses less digits than its factorization.

4002444044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200122202230 (or 200122202228 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 4002444044420 its reverse (244404442004), we get a palindrome (4246848486424).

The spelling of 4002444044420 in words is "four trillion, two billion, four hundred forty-four million, forty-four thousand, four hundred twenty".