985971229 has 2 divisors, whose sum is σ = 985971230. Its totient is φ = 985971228.

The previous prime is 985971167. The next prime is 985971241. The reversal of 985971229 is 922179589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972816100 + 13155129 = 31190^2 + 3627^2 .

It is an emirp because it is prime and its reverse (922179589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985971229 - 2⁷ = 985971101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985971289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492985614 + 492985615.

It is an arithmetic number, because the mean of its divisors is an integer number (492985615).

Almost surely, 2^985971229 is an apocalyptic number.

It is an amenable number.

985971229 is a deficient number, since it is larger than the sum of its proper divisors (1).

985971229 is an equidigital number, since it uses as much as digits as its factorization.

985971229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The square root of 985971229 is about 31400.1788052234. The cubic root of 985971229 is about 995.3017035808.

The spelling of 985971229 in words is "nine hundred eighty-five million, nine hundred seventy-one thousand, two hundred twenty-nine".