4021444220 has 24 divisors (see below), whose sum is σ = 8448551664. Its totient is φ = 1607907456.

The previous prime is 4021444211. The next prime is 4021444243. The reversal of 4021444220 is 224441204.

It is a super-2 number, since 2×4021444220² = 32344027229142816800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8807 + ... + 90113.

It is an arithmetic number, because the mean of its divisors is an integer number (352022986).

Almost surely, 2^4021444220 is an apocalyptic number.

It is an amenable number.

4021444220 is an abundant number, since it is smaller than the sum of its proper divisors (4427107444).

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

4021444220 is a wasteful number, since it uses less digits than its factorization.

4021444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83789 (or 83787 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4021444220 is about 63414.8580381601. The cubic root of 4021444220 is about 1590.2327125335.

Adding to 4021444220 its reverse (224441204), we get a palindrome (4245885424).

The spelling of 4021444220 in words is "four billion, twenty-one million, four hundred forty-four thousand, two hundred twenty".