9856871 has 4 divisors (see below), whose sum is σ = 9882600. Its totient is φ = 9831144.

The previous prime is 9856843. The next prime is 9856883. The reversal of 9856871 is 1786589.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9856871 - 2¹⁴ = 9840487 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9856471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12281 + ... + 13058.

It is an arithmetic number, because the mean of its divisors is an integer number (2470650).

Almost surely, 2^9856871 is an apocalyptic number.

9856871 is a deficient number, since it is larger than the sum of its proper divisors (25729).

9856871 is a wasteful number, since it uses less digits than its factorization.

9856871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25728.

The product of its digits is 120960, while the sum is 44.

The square root of 9856871 is about 3139.5654157861. The cubic root of 9856871 is about 214.4106520730.

The spelling of 9856871 in words is "nine million, eight hundred fifty-six thousand, eight hundred seventy-one".