8722439812 has 12 divisors (see below), whose sum is σ = 15329783196. Its totient is φ = 4342501760.

The previous prime is 8722439809. The next prime is 8722439819. The reversal of 8722439812 is 2189342278.

8722439812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1769548356 + 6952891456 = 42066^2 + 83384^2 .

It is not an unprimeable number, because it can be changed into a prime (8722439819) by changing a digit.

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, 4678489 + ... + 4680352.

It is an arithmetic number, because the mean of its divisors is an integer number (1277481933).

Almost surely, 2^8722439812 is an apocalyptic number.

It is an amenable number.

8722439812 is a deficient number, since it is larger than the sum of its proper divisors (6607343384).

8722439812 is a wasteful number, since it uses less digits than its factorization.

8722439812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359078 (or 9359076 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 8722439812 is about 93394.0030837098. The cubic root of 8722439812 is about 2058.4768811549.

The spelling of 8722439812 in words is "eight billion, seven hundred twenty-two million, four hundred thirty-nine thousand, eight hundred twelve".