9803 has 2 divisors, whose sum is σ = 9804. Its totient is φ = 9802.

The previous prime is 9791. The next prime is 9811. The reversal of 9803 is 3089.

9803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (3089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9803 - 2⁴ = 9787 is a prime.

It is not a weakly prime, because it can be changed into another prime (9833) 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 as a sum of consecutive naturals, namely, 4901 + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (4902).

2⁹⁸⁰³ is an apocalyptic number.

9803 is a deficient number, since it is larger than the sum of its proper divisors (1).

9803 is an equidigital number, since it uses as much as digits as its factorization.

9803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 9803 is about 99.0101004948. The cubic root of 9803 is about 21.4019330364.

It can be divided in two parts, 9 and 803, that multiplied together give a palindrome (7227).

The spelling of 9803 in words is "nine thousand, eight hundred three".