864486289 has 2 divisors, whose sum is σ = 864486290. Its totient is φ = 864486288.

The previous prime is 864486269. The next prime is 864486307. The reversal of 864486289 is 982684468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740275264 + 124211025 = 27208^2 + 11145^2 .

It is a cyclic number.

It is not a de Polignac number, because 864486289 - 2⁹ = 864485777 is a prime.

It is not a weakly prime, because it can be changed into another prime (864486239) 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, 432243144 + 432243145.

It is an arithmetic number, because the mean of its divisors is an integer number (432243145).

Almost surely, 2^864486289 is an apocalyptic number.

It is an amenable number.

864486289 is a deficient number, since it is larger than the sum of its proper divisors (1).

864486289 is an equidigital number, since it uses as much as digits as its factorization.

864486289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 55.

The square root of 864486289 is about 29402.1476936635. The cubic root of 864486289 is about 952.6192864799.

The spelling of 864486289 in words is "eight hundred sixty-four million, four hundred eighty-six thousand, two hundred eighty-nine".