9983563 has 4 divisors (see below), whose sum is σ = 9991888. Its totient is φ = 9975240.

The previous prime is 9983551. The next prime is 9983579. The reversal of 9983563 is 3653899.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3653899 = 1093 ⋅3343.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9983563 is a prime.

It is a d-powerful number, because it can be written as 9⁵ + 9⁷ + 8³ + 3 + 5⁷ + 6⁷ + 3¹⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9983543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983 + ... + 4888.

It is an arithmetic number, because the mean of its divisors is an integer number (2497972).

Almost surely, 2^9983563 is an apocalyptic number.

9983563 is a deficient number, since it is larger than the sum of its proper divisors (8325).

9983563 is a wasteful number, since it uses less digits than its factorization.

9983563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8324.

The product of its digits is 174960, while the sum is 43.

The square root of 9983563 is about 3159.6776734344. The cubic root of 9983563 is about 215.3253627925.

The spelling of 9983563 in words is "nine million, nine hundred eighty-three thousand, five hundred sixty-three".