864233549 has 2 divisors, whose sum is σ = 864233550. Its totient is φ = 864233548.

The previous prime is 864233537. The next prime is 864233561. The reversal of 864233549 is 945332468.

It is a balanced prime because it is at equal distance from previous prime (864233537) and next prime (864233561).

It can be written as a sum of positive squares in only one way, i.e., 558613225 + 305620324 = 23635^2 + 17482^2 .

It is a cyclic number.

It is not a de Polignac number, because 864233549 - 2²⁴ = 847456333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864233749) 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, 432116774 + 432116775.

It is an arithmetic number, because the mean of its divisors is an integer number (432116775).

Almost surely, 2^864233549 is an apocalyptic number.

It is an amenable number.

864233549 is a deficient number, since it is larger than the sum of its proper divisors (1).

864233549 is an equidigital number, since it uses as much as digits as its factorization.

864233549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 864233549 is about 29397.8493941309. The cubic root of 864233549 is about 952.5264419514.

The spelling of 864233549 in words is "eight hundred sixty-four million, two hundred thirty-three thousand, five hundred forty-nine".