4021443244 has 24 divisors (see below), whose sum is σ = 8661570848. Its totient is φ = 1590900480.

The previous prime is 4021443241. The next prime is 4021443259. The reversal of 4021443244 is 4423441204.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (4021443241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5523597 + ... + 5524324.

Almost surely, 2^4021443244 is an apocalyptic number.

It is an amenable number.

4021443244 is an abundant number, since it is smaller than the sum of its proper divisors (4640127604).

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

4021443244 is a wasteful number, since it uses less digits than its factorization.

4021443244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11047945 (or 11047943 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 4021443244 is about 63414.8503428022. The cubic root of 4021443244 is about 1590.2325838842.

Adding to 4021443244 its reverse (4423441204), we get a palindrome (8444884448).

The spelling of 4021443244 in words is "four billion, twenty-one million, four hundred forty-three thousand, two hundred forty-four".