9085812917 has 2 divisors, whose sum is σ = 9085812918. Its totient is φ = 9085812916.

The previous prime is 9085812899. The next prime is 9085812929. The reversal of 9085812917 is 7192185809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9048955876 + 36857041 = 95126^2 + 6071^2 .

It is an emirp because it is prime and its reverse (7192185809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9085812917 - 2¹² = 9085808821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9085812937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4542906458 + 4542906459.

It is an arithmetic number, because the mean of its divisors is an integer number (4542906459).

Almost surely, 2^9085812917 is an apocalyptic number.

It is an amenable number.

9085812917 is a deficient number, since it is larger than the sum of its proper divisors (1).

9085812917 is an equidigital number, since it uses as much as digits as its factorization.

9085812917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 50.

The square root of 9085812917 is about 95319.5306167629. The cubic root of 9085812917 is about 2086.6739613495.

The spelling of 9085812917 in words is "nine billion, eighty-five million, eight hundred twelve thousand, nine hundred seventeen".