8645092889 has 2 divisors, whose sum is σ = 8645092890. Its totient is φ = 8645092888.

The previous prime is 8645092867. The next prime is 8645092913. The reversal of 8645092889 is 9882905468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8165833225 + 479259664 = 90365^2 + 21892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8645092889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8645092849) 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, 4322546444 + 4322546445.

It is an arithmetic number, because the mean of its divisors is an integer number (4322546445).

Almost surely, 2^8645092889 is an apocalyptic number.

It is an amenable number.

8645092889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645092889 is an equidigital number, since it uses as much as digits as its factorization.

8645092889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 59.

The square root of 8645092889 is about 92978.9916540290. The cubic root of 8645092889 is about 2052.3742381934.

The spelling of 8645092889 in words is "eight billion, six hundred forty-five million, ninety-two thousand, eight hundred eighty-nine".