985965247 has 2 divisors, whose sum is σ = 985965248. Its totient is φ = 985965246.

The previous prime is 985965209. The next prime is 985965263. The reversal of 985965247 is 742569589.

It is a strong prime.

It is an emirp because it is prime and its reverse (742569589) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985965247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985065247) 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, 492982623 + 492982624.

It is an arithmetic number, because the mean of its divisors is an integer number (492982624).

Almost surely, 2^985965247 is an apocalyptic number.

985965247 is a deficient number, since it is larger than the sum of its proper divisors (1).

985965247 is an equidigital number, since it uses as much as digits as its factorization.

985965247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 985965247 is about 31400.0835508443. The cubic root of 985965247 is about 995.2996907071.

The spelling of 985965247 in words is "nine hundred eighty-five million, nine hundred sixty-five thousand, two hundred forty-seven".