9887171 has 24 divisors (see below), whose sum is σ = 12432384. Its totient is φ = 7817040.

The previous prime is 9887159. The next prime is 9887179. The reversal of 9887171 is 1717889.

It is not a de Polignac number, because 9887171 - 2⁶ = 9887107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9887179) 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, 34796 + ... + 35078.

It is an arithmetic number, because the mean of its divisors is an integer number (518016).

Almost surely, 2^9887171 is an apocalyptic number.

9887171 is a deficient number, since it is larger than the sum of its proper divisors (2545213).

9887171 is a wasteful number, since it uses less digits than its factorization.

9887171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 344 counting only the distinct ones).

The product of its digits is 28224, while the sum is 41.

The square root of 9887171 is about 3144.3872217016. The cubic root of 9887171 is about 214.6301266308.

The spelling of 9887171 in words is "nine million, eight hundred eighty-seven thousand, one hundred seventy-one".