9871161 has 8 divisors (see below), whose sum is σ = 13184160. Its totient is φ = 6569472.

The previous prime is 9871159. The next prime is 9871181. The reversal of 9871161 is 1611789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9871161 - 2¹ = 9871159 is a prime.

9871161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9871111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (1648020).

Almost surely, 2^9871161 is an apocalyptic number.

It is an amenable number.

9871161 is a deficient number, since it is larger than the sum of its proper divisors (3312999).

9871161 is a wasteful number, since it uses less digits than its factorization.

9871161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655.

The product of its digits is 3024, while the sum is 33.

The square root of 9871161 is about 3141.8403842334. The cubic root of 9871161 is about 214.5142159986.

The spelling of 9871161 in words is "nine million, eight hundred seventy-one thousand, one hundred sixty-one".