985111249 has 2 divisors, whose sum is σ = 985111250. Its totient is φ = 985111248.

The previous prime is 985111243. The next prime is 985111289. The reversal of 985111249 is 942111589.

It is an a-pointer prime, because the next prime (985111289) can be obtained adding 985111249 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861011649 + 124099600 = 29343^2 + 11140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985111249 is a prime.

It is not a weakly prime, because it can be changed into another prime (985111243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492555624 + 492555625.

It is an arithmetic number, because the mean of its divisors is an integer number (492555625).

Almost surely, 2^985111249 is an apocalyptic number.

It is an amenable number.

985111249 is a deficient number, since it is larger than the sum of its proper divisors (1).

985111249 is an equidigital number, since it uses as much as digits as its factorization.

985111249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 40.

The square root of 985111249 is about 31386.4819468509. The cubic root of 985111249 is about 995.0122466780.

The spelling of 985111249 in words is "nine hundred eighty-five million, one hundred eleven thousand, two hundred forty-nine".