9863 has 4 divisors (see below), whose sum is σ = 11280. Its totient is φ = 8448.

The previous prime is 9859. The next prime is 9871. The reversal of 9863 is 3689.

It is a happy number.

9863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9863 - 2² = 9859 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6 and base 9.

It is a nialpdrome in base 10.

It is a zygodrome in base 6.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9863.

It is not an unprimeable number, because it can be changed into a prime (9803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (2820).

2⁹⁸⁶³ is an apocalyptic number.

9863 is a deficient number, since it is larger than the sum of its proper divisors (1417).

9863 is a wasteful number, since it uses less digits than its factorization.

9863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its digits is 1296, while the sum is 26.

The square root of 9863 is about 99.3126376651. The cubic root of 9863 is about 21.4455083029.

Adding to 9863 its sum of digits (26), we get a palindrome (9889).

It can be divided in two parts, 986 and 3, that added together give a palindrome (989).

The spelling of 9863 in words is "nine thousand, eight hundred sixty-three".