9969689 has 2 divisors, whose sum is σ = 9969690. Its totient is φ = 9969688.

The previous prime is 9969653. The next prime is 9969697. The reversal of 9969689 is 9869699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5593225 + 4376464 = 2365^2 + 2092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9969689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9969629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984844 + 4984845.

It is an arithmetic number, because the mean of its divisors is an integer number (4984845).

Almost surely, 2^9969689 is an apocalyptic number.

It is an amenable number.

9969689 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969689 is an equidigital number, since it uses as much as digits as its factorization.

9969689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 56.

The square root of 9969689 is about 3157.4814330412. The cubic root of 9969689 is about 215.2255717990.

The spelling of 9969689 in words is "nine million, nine hundred sixty-nine thousand, six hundred eighty-nine".