4044044420 has 24 divisors (see below), whose sum is σ = 9145762584. Its totient is φ = 1493185536.

The previous prime is 4044044419. The next prime is 4044044429. The reversal of 4044044420 is 244404404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 646786624 + 3397257796 = 25432^2 + 58286^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 4044044420.

It is not an unprimeable number, because it can be changed into a prime (4044044429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7776749 + ... + 7777268.

It is an arithmetic number, because the mean of its divisors is an integer number (381073441).

Almost surely, 2^4044044420 is an apocalyptic number.

It is an amenable number.

4044044420 is an abundant number, since it is smaller than the sum of its proper divisors (5101718164).

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

4044044420 is a wasteful number, since it uses less digits than its factorization.

4044044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15554039 (or 15554037 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 4044044420 is about 63592.8016366632. The cubic root of 4044044420 is about 1593.2061435482.

Adding to 4044044420 its reverse (244404404), we get a palindrome (4288448824).

The spelling of 4044044420 in words is "four billion, forty-four million, forty-four thousand, four hundred twenty".