866456099 has 2 divisors, whose sum is σ = 866456100. Its totient is φ = 866456098.

The previous prime is 866456093. The next prime is 866456117. The reversal of 866456099 is 990654668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866456099 - 2¹⁶ = 866390563 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866456099.

It is not a weakly prime, because it can be changed into another prime (866456093) 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, 433228049 + 433228050.

It is an arithmetic number, because the mean of its divisors is an integer number (433228050).

Almost surely, 2^866456099 is an apocalyptic number.

866456099 is a deficient number, since it is larger than the sum of its proper divisors (1).

866456099 is an equidigital number, since it uses as much as digits as its factorization.

866456099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 866456099 is about 29435.6263565089. The cubic root of 866456099 is about 953.3422806171.

The spelling of 866456099 in words is "eight hundred sixty-six million, four hundred fifty-six thousand, ninety-nine".