9685889 has 2 divisors, whose sum is σ = 9685890. Its totient is φ = 9685888.

The previous prime is 9685861. The next prime is 9685931. The reversal of 9685889 is 9885869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7795264 + 1890625 = 2792^2 + 1375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9685889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9685889.

It is not a weakly prime, because it can be changed into another prime (9685589) 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, 4842944 + 4842945.

It is an arithmetic number, because the mean of its divisors is an integer number (4842945).

Almost surely, 2^9685889 is an apocalyptic number.

It is an amenable number.

9685889 is a deficient number, since it is larger than the sum of its proper divisors (1).

9685889 is an equidigital number, since it uses as much as digits as its factorization.

9685889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 53.

The square root of 9685889 is about 3112.2160914692. The cubic root of 9685889 is about 213.1636571290.

The spelling of 9685889 in words is "nine million, six hundred eighty-five thousand, eight hundred eighty-nine".