8782243849 has 2 divisors, whose sum is σ = 8782243850. Its totient is φ = 8782243848.

The previous prime is 8782243781. The next prime is 8782243853. The reversal of 8782243849 is 9483422878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5819401225 + 2962842624 = 76285^2 + 54432^2 .

It is a cyclic number.

It is not a de Polignac number, because 8782243849 - 2⁷ = 8782243721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8782243849.

It is not a weakly prime, because it can be changed into another prime (8782243879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4391121924 + 4391121925.

It is an arithmetic number, because the mean of its divisors is an integer number (4391121925).

Almost surely, 2^8782243849 is an apocalyptic number.

It is an amenable number.

8782243849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8782243849 is an equidigital number, since it uses as much as digits as its factorization.

8782243849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 55.

The square root of 8782243849 is about 93713.6268052838. The cubic root of 8782243849 is about 2063.1707109579.

The spelling of 8782243849 in words is "eight billion, seven hundred eighty-two million, two hundred forty-three thousand, eight hundred forty-nine".