9985115893 has 2 divisors, whose sum is σ = 9985115894. Its totient is φ = 9985115892.

The previous prime is 9985115867. The next prime is 9985115911. The reversal of 9985115893 is 3985115899.

9985115893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8132071684 + 1853044209 = 90178^2 + 43047^2 .

It is an emirp because it is prime and its reverse (3985115899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9985115893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9985115863) 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, 4992557946 + 4992557947.

It is an arithmetic number, because the mean of its divisors is an integer number (4992557947).

Almost surely, 2^9985115893 is an apocalyptic number.

It is an amenable number.

9985115893 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985115893 is an equidigital number, since it uses as much as digits as its factorization.

9985115893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 58.

The square root of 9985115893 is about 99925.5517522921. The cubic root of 9985115893 is about 2153.3652647265.

The spelling of 9985115893 in words is "nine billion, nine hundred eighty-five million, one hundred fifteen thousand, eight hundred ninety-three".