985887171 has 24 divisors (see below), whose sum is σ = 1511718624. Its totient is φ = 616999680.

The previous prime is 985887169. The next prime is 985887173. The reversal of 985887171 is 171788589.

It is an interprime number because it is at equal distance from previous prime (985887169) and next prime (985887173).

It is not a de Polignac number, because 985887171 - 2¹ = 985887169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (985887173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52626 + ... + 68856.

It is an arithmetic number, because the mean of its divisors is an integer number (62988276).

Almost surely, 2^985887171 is an apocalyptic number.

985887171 is a deficient number, since it is larger than the sum of its proper divisors (525831453).

985887171 is a wasteful number, since it uses less digits than its factorization.

985887171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651 (or 16648 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 54.

The square root of 985887171 is about 31398.8402811314. The cubic root of 985887171 is about 995.2734182902.

The spelling of 985887171 in words is "nine hundred eighty-five million, eight hundred eighty-seven thousand, one hundred seventy-one".