9838 has 4 divisors (see below), whose sum is σ = 14760. Its totient is φ = 4918.

The previous prime is 9833. The next prime is 9839. The reversal of 9838 is 8389.

9838 is nontrivially palindromic in base 9.

9838 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2458 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (3690).

2⁹⁸³⁸ is an apocalyptic number.

9838 is a deficient number, since it is larger than the sum of its proper divisors (4922).

9838 is a wasteful number, since it uses less digits than its factorization.

9838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921.

The product of its digits is 1728, while the sum is 28.

The square root of 9838 is about 99.1866926558. The cubic root of 9838 is about 21.4273734780.

It can be divided in two parts, 98 and 38, that added together give a triangular number (136 = T₁₆).

The spelling of 9838 in words is "nine thousand, eight hundred thirty-eight".