8684389513 has 2 divisors, whose sum is σ = 8684389514. Its totient is φ = 8684389512.

The previous prime is 8684389433. The next prime is 8684389577. The reversal of 8684389513 is 3159834868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4655059984 + 4029329529 = 68228^2 + 63477^2 .

It is a cyclic number.

It is not a de Polignac number, because 8684389513 - 2⁹ = 8684389001 is a prime.

It is not a weakly prime, because it can be changed into another prime (8684389583) 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, 4342194756 + 4342194757.

It is an arithmetic number, because the mean of its divisors is an integer number (4342194757).

Almost surely, 2^8684389513 is an apocalyptic number.

It is an amenable number.

8684389513 is a deficient number, since it is larger than the sum of its proper divisors (1).

8684389513 is an equidigital number, since it uses as much as digits as its factorization.

8684389513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 55.

The square root of 8684389513 is about 93190.0719658484. The cubic root of 8684389513 is about 2055.4792553425.

The spelling of 8684389513 in words is "eight billion, six hundred eighty-four million, three hundred eighty-nine thousand, five hundred thirteen".