9912182309 has 2 divisors, whose sum is σ = 9912182310. Its totient is φ = 9912182308.

The previous prime is 9912182261. The next prime is 9912182321. The reversal of 9912182309 is 9032812199.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5340394084 + 4571788225 = 73078^2 + 67615^2 .

It is an emirp because it is prime and its reverse (9032812199) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9912182309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9912182309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9912182909) 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, 4956091154 + 4956091155.

It is an arithmetic number, because the mean of its divisors is an integer number (4956091155).

Almost surely, 2^9912182309 is an apocalyptic number.

It is an amenable number.

9912182309 is a deficient number, since it is larger than the sum of its proper divisors (1).

9912182309 is an equidigital number, since it uses as much as digits as its factorization.

9912182309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 9912182309 is about 99559.9432954841. The cubic root of 9912182309 is about 2148.1095557872.

The spelling of 9912182309 in words is "nine billion, nine hundred twelve million, one hundred eighty-two thousand, three hundred nine".