9887443 has 4 divisors (see below), whose sum is σ = 9901008. Its totient is φ = 9873880.

The previous prime is 9887441. The next prime is 9887503. The reversal of 9887443 is 3447889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3447889 = 17 ⋅202817.

It is a cyclic number.

It is not a de Polignac number, because 9887443 - 2¹ = 9887441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9887443.

It is not an unprimeable number, because it can be changed into a prime (9887441) 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, 5623 + ... + 7168.

It is an arithmetic number, because the mean of its divisors is an integer number (2475252).

Almost surely, 2^9887443 is an apocalyptic number.

9887443 is a deficient number, since it is larger than the sum of its proper divisors (13565).

9887443 is a wasteful number, since it uses less digits than its factorization.

9887443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13564.

The product of its digits is 193536, while the sum is 43.

The square root of 9887443 is about 3144.4304730746. The cubic root of 9887443 is about 214.6320947995.

The spelling of 9887443 in words is "nine million, eight hundred eighty-seven thousand, four hundred forty-three".