8686812289 has 2 divisors, whose sum is σ = 8686812290. Its totient is φ = 8686812288.

The previous prime is 8686812263. The next prime is 8686812341. The reversal of 8686812289 is 9822186868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7707435264 + 979377025 = 87792^2 + 31295^2 .

It is a cyclic number.

It is not a de Polignac number, because 8686812289 - 2²⁵ = 8653257857 is a prime.

It is not a weakly prime, because it can be changed into another prime (8686812389) by changing a digit.

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 as a sum of consecutive naturals, namely, 4343406144 + 4343406145.

It is an arithmetic number, because the mean of its divisors is an integer number (4343406145).

Almost surely, 2^8686812289 is an apocalyptic number.

It is an amenable number.

8686812289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8686812289 is an equidigital number, since it uses as much as digits as its factorization.

8686812289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 58.

The square root of 8686812289 is about 93203.0701693887. The cubic root of 8686812289 is about 2055.6703838329.

The spelling of 8686812289 in words is "eight billion, six hundred eighty-six million, eight hundred twelve thousand, two hundred eighty-nine".