8343728489 has 2 divisors, whose sum is σ = 8343728490. Its totient is φ = 8343728488.

The previous prime is 8343728483. The next prime is 8343728521. The reversal of 8343728489 is 9848273438.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7438200025 + 905528464 = 86245^2 + 30092^2 .

It is a cyclic number.

It is not a de Polignac number, because 8343728489 - 2¹⁶ = 8343662953 is a prime.

It is not a weakly prime, because it can be changed into another prime (8343728483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171864244 + 4171864245.

It is an arithmetic number, because the mean of its divisors is an integer number (4171864245).

Almost surely, 2^8343728489 is an apocalyptic number.

It is an amenable number.

8343728489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8343728489 is an equidigital number, since it uses as much as digits as its factorization.

8343728489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 56.

The square root of 8343728489 is about 91344.0117851192. The cubic root of 8343728489 is about 2028.2433207273.

The spelling of 8343728489 in words is "eight billion, three hundred forty-three million, seven hundred twenty-eight thousand, four hundred eighty-nine".