864340224389 has 2 divisors, whose sum is σ = 864340224390. Its totient is φ = 864340224388.

The previous prime is 864340224373. The next prime is 864340224403. The reversal of 864340224389 is 983422043468.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817999051489 + 46341172900 = 904433^2 + 215270^2 .

It is a cyclic number.

It is not a de Polignac number, because 864340224389 - 2⁴ = 864340224373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864340224389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864340224359) 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, 432170112194 + 432170112195.

It is an arithmetic number, because the mean of its divisors is an integer number (432170112195).

Almost surely, 2^864340224389 is an apocalyptic number.

It is an amenable number.

864340224389 is a deficient number, since it is larger than the sum of its proper divisors (1).

864340224389 is an equidigital number, since it uses as much as digits as its factorization.

864340224389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 53.

The spelling of 864340224389 in words is "eight hundred sixty-four billion, three hundred forty million, two hundred twenty-four thousand, three hundred eighty-nine".