864297223 has 2 divisors, whose sum is σ = 864297224. Its totient is φ = 864297222.

The previous prime is 864297191. The next prime is 864297281. The reversal of 864297223 is 322792468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864297223 - 2⁵ = 864297191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864297223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864297283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432148611 + 432148612.

It is an arithmetic number, because the mean of its divisors is an integer number (432148612).

Almost surely, 2^864297223 is an apocalyptic number.

864297223 is a deficient number, since it is larger than the sum of its proper divisors (1).

864297223 is an equidigital number, since it uses as much as digits as its factorization.

864297223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 864297223 is about 29398.9323445597. The cubic root of 864297223 is about 952.5498344242.

The spelling of 864297223 in words is "eight hundred sixty-four million, two hundred ninety-seven thousand, two hundred twenty-three".