9689843209 has 16 divisors (see below), whose sum is σ = 10313208576. Its totient is φ = 9072518400.

The previous prime is 9689843201. The next prime is 9689843221. The reversal of 9689843209 is 9023489869.

It is a cyclic number.

It is not a de Polignac number, because 9689843209 - 2³ = 9689843201 is a prime.

It is a super-2 number, since 2×9689843209² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9689843201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4361719 + ... + 4363939.

It is an arithmetic number, because the mean of its divisors is an integer number (644575536).

Almost surely, 2^9689843209 is an apocalyptic number.

It is an amenable number.

9689843209 is a deficient number, since it is larger than the sum of its proper divisors (623365367).

9689843209 is a wasteful number, since it uses less digits than its factorization.

9689843209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The square root of 9689843209 is about 98437.0012190538. The cubic root of 9689843209 is about 2131.9266079871.

The spelling of 9689843209 in words is "nine billion, six hundred eighty-nine million, eight hundred forty-three thousand, two hundred nine".