9689889899 has 2 divisors, whose sum is σ = 9689889900. Its totient is φ = 9689889898.

The previous prime is 9689889893. The next prime is 9689889917. The reversal of 9689889899 is 9989889869.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9689889899 is a prime.

It is not a weakly prime, because it can be changed into another prime (9689889893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4844944949 + 4844944950.

It is an arithmetic number, because the mean of its divisors is an integer number (4844944950).

Almost surely, 2^9689889899 is an apocalyptic number.

9689889899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9689889899 is an equidigital number, since it uses as much as digits as its factorization.

9689889899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451188224, while the sum is 83.

The square root of 9689889899 is about 98437.2383755253. The cubic root of 9689889899 is about 2131.9300321737.

The spelling of 9689889899 in words is "nine billion, six hundred eighty-nine million, eight hundred eighty-nine thousand, eight hundred ninety-nine".