9869131009 has 2 divisors, whose sum is σ = 9869131010. Its totient is φ = 9869131008.

The previous prime is 9869131001. The next prime is 9869131037. The reversal of 9869131009 is 9001319689.

9869131009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8277360400 + 1591770609 = 90980^2 + 39897^2 .

It is an emirp because it is prime and its reverse (9001319689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9869131009 - 2³ = 9869131001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9869131009.

It is not a weakly prime, because it can be changed into another prime (9869131001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934565504 + 4934565505.

It is an arithmetic number, because the mean of its divisors is an integer number (4934565505).

Almost surely, 2^9869131009 is an apocalyptic number.

It is an amenable number.

9869131009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869131009 is an equidigital number, since it uses as much as digits as its factorization.

9869131009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 9869131009 is about 99343.5000843035. The cubic root of 9869131009 is about 2144.9951013702.

The spelling of 9869131009 in words is "nine billion, eight hundred sixty-nine million, one hundred thirty-one thousand, nine".