9898 has 12 divisors (see below), whose sum is σ = 17442. Its totient is φ = 4200.

The previous prime is 9887. The next prime is 9901. The reversal of 9898 is 8989.

9898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

9898 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 5929 + 3969 = 77^2 + 63^2 .

It is an alternating number because its digits alternate between odd and even.

9898 is an undulating number in base 10.

It is a plaindrome in base 12 and base 16.

It is an unprimeable number.

9898 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 48 + ... + 148.

2⁹⁸⁹⁸ is an apocalyptic number.

9898 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9898 is a deficient number, since it is larger than the sum of its proper divisors (7544).

9898 is a wasteful number, since it uses less digits than its factorization.

9898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 110 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 9898 is about 99.4886928249. The cubic root of 9898 is about 21.4708456472.

Subtracting from 9898 its reverse (8989), we obtain a palindrome (909).

It can be divided in two parts, 98 and 98, that added together give a square (196 = 14²).

The spelling of 9898 in words is "nine thousand, eight hundred ninety-eight".