866112199 has 2 divisors, whose sum is σ = 866112200. Its totient is φ = 866112198.

The previous prime is 866112157. The next prime is 866112241. The reversal of 866112199 is 991211668.

It is a balanced prime because it is at equal distance from previous prime (866112157) and next prime (866112241).

It is a cyclic number.

It is not a de Polignac number, because 866112199 - 2¹¹ = 866110151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866112139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433056099 + 433056100.

It is an arithmetic number, because the mean of its divisors is an integer number (433056100).

Almost surely, 2^866112199 is an apocalyptic number.

866112199 is a deficient number, since it is larger than the sum of its proper divisors (1).

866112199 is an equidigital number, since it uses as much as digits as its factorization.

866112199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 866112199 is about 29429.7842159945. The cubic root of 866112199 is about 953.2161354318.

The spelling of 866112199 in words is "eight hundred sixty-six million, one hundred twelve thousand, one hundred ninety-nine".