985887169 has 2 divisors, whose sum is σ = 985887170. Its totient is φ = 985887168.

The previous prime is 985887167. The next prime is 985887173. The reversal of 985887169 is 961788589.

985887169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985206544 + 680625 = 31388^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 985887169 - 2¹ = 985887167 is a prime.

It is a super-2 number, since 2×985887169² = 1943947019997669122, which contains 22 as substring.

Together with 985887167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (985887167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492943584 + 492943585.

It is an arithmetic number, because the mean of its divisors is an integer number (492943585).

Almost surely, 2^985887169 is an apocalyptic number.

It is an amenable number.

985887169 is a deficient number, since it is larger than the sum of its proper divisors (1).

985887169 is an equidigital number, since it uses as much as digits as its factorization.

985887169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 61.

The square root of 985887169 is about 31398.8402492831. The cubic root of 985887169 is about 995.2734176172.

The spelling of 985887169 in words is "nine hundred eighty-five million, eight hundred eighty-seven thousand, one hundred sixty-nine".