9799 has 4 divisors (see below), whose sum is σ = 10080. Its totient is φ = 9520.

The previous prime is 9791. The next prime is 9803. The reversal of 9799 is 9979.

9799 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, and also an emirpimes, since its reverse is a distinct semiprime: 9979 = 17 ⋅587.

It is a cyclic number.

It is not a de Polignac number, because 9799 - 2³ = 9791 is a prime.

It is a Duffinian number.

9799 is a modest number, since divided by 99 gives 97 as remainder.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9791) 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, 79 + ... + 160.

It is an arithmetic number, because the mean of its divisors is an integer number (2520).

2⁹⁷⁹⁹ is an apocalyptic number.

9799 is a deficient number, since it is larger than the sum of its proper divisors (281).

9799 is a wasteful number, since it uses less digits than its factorization.

9799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its digits is 5103, while the sum is 34.

The square root of 9799 is about 98.9898984745. The cubic root of 9799 is about 21.3990217039.

It can be divided in two parts, 97 and 99, that added together give a square (196 = 14²).

The spelling of 9799 in words is "nine thousand, seven hundred ninety-nine".