9699844866 has 16 divisors (see below), whose sum is σ = 19812449664. Its totient is φ = 3164488304.

The previous prime is 9699844813. The next prime is 9699844867. The reversal of 9699844866 is 6684489969.

It is a self number, because there is not a number n which added to its sum of digits gives 9699844866.

It is not an unprimeable number, because it can be changed into a prime (9699844867) 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 7 ways as a sum of consecutive naturals, for example, 17198025 + ... + 17198588.

It is an arithmetic number, because the mean of its divisors is an integer number (1238278104).

Almost surely, 2^9699844866 is an apocalyptic number.

9699844866 is an abundant number, since it is smaller than the sum of its proper divisors (10112604798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9699844866 is a wasteful number, since it uses less digits than its factorization.

9699844866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34396665.

The product of its digits is 161243136, while the sum is 69.

The square root of 9699844866 is about 98487.7904412522. The cubic root of 9699844866 is about 2132.6598660357.

The spelling of 9699844866 in words is "nine billion, six hundred ninety-nine million, eight hundred forty-four thousand, eight hundred sixty-six".