9887071 has 4 divisors (see below), whose sum is σ = 9915912. Its totient is φ = 9858232.

The previous prime is 9887069. The next prime is 9887093. The reversal of 9887071 is 1707889.

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 9887071 - 2¹ = 9887069 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887021) 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, 13900 + ... + 14593.

It is an arithmetic number, because the mean of its divisors is an integer number (2478978).

Almost surely, 2^9887071 is an apocalyptic number.

9887071 is a deficient number, since it is larger than the sum of its proper divisors (28841).

9887071 is a wasteful number, since it uses less digits than its factorization.

9887071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28840.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 9887071 is about 3144.3713203119. The cubic root of 9887071 is about 214.6294030304.

The spelling of 9887071 in words is "nine million, eight hundred eighty-seven thousand, seventy-one".