8643200869 has 2 divisors, whose sum is σ = 8643200870. Its totient is φ = 8643200868.

The previous prime is 8643200831. The next prime is 8643200887. The reversal of 8643200869 is 9680023468.

It is a happy number.

8643200869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8334777025 + 308423844 = 91295^2 + 17562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8643200869 is a prime.

It is a super-2 number, since 2×8643200869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8643200369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321600434 + 4321600435.

It is an arithmetic number, because the mean of its divisors is an integer number (4321600435).

Almost surely, 2^8643200869 is an apocalyptic number.

It is an amenable number.

8643200869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8643200869 is an equidigital number, since it uses as much as digits as its factorization.

8643200869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 8643200869 is about 92968.8166483795. The cubic root of 8643200869 is about 2052.2245032910.

The spelling of 8643200869 in words is "eight billion, six hundred forty-three million, two hundred thousand, eight hundred sixty-nine".