4443120820 has 12 divisors (see below), whose sum is σ = 9330553764. Its totient is φ = 1777248320.

The previous prime is 4443120811. The next prime is 4443120853. The reversal of 4443120820 is 280213444.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3428570916 + 1014549904 = 58554^2 + 31852^2 .

It is a super-2 number, since 2×4443120820² = 39482645242234944800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 111078001 + ... + 111078040.

It is an arithmetic number, because the mean of its divisors is an integer number (777546147).

Almost surely, 2^4443120820 is an apocalyptic number.

It is an amenable number.

4443120820 is an abundant number, since it is smaller than the sum of its proper divisors (4887432944).

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

4443120820 is a wasteful number, since it uses less digits than its factorization.

4443120820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222156050 (or 222156048 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 4443120820 is about 66656.7387441060. The cubic root of 4443120820 is about 1643.9781497521.

The spelling of 4443120820 in words is "four billion, four hundred forty-three million, one hundred twenty thousand, eight hundred twenty".