864299 has 2 divisors, whose sum is σ = 864300. Its totient is φ = 864298.

The previous prime is 864289. The next prime is 864301. The reversal of 864299 is 992468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864299 is a prime.

It is a super-2 number, since 2×864299² = 1494025522802, which contains 22 as substring.

Together with 864301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (864289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432149 + 432150.

It is an arithmetic number, because the mean of its divisors is an integer number (432150).

2⁸⁶⁴²⁹⁹ is an apocalyptic number.

864299 is a deficient number, since it is larger than the sum of its proper divisors (1).

864299 is an equidigital number, since it uses as much as digits as its factorization.

864299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 864299 is about 929.6768255690. The cubic root of 864299 is about 95.2550487240.

It can be divided in two parts, 8642 and 99, that multiplied together give a palindrome (855558).

The spelling of 864299 in words is "eight hundred sixty-four thousand, two hundred ninety-nine".