9982 has 16 divisors (see below), whose sum is σ = 18432. Its totient is φ = 3960.

The previous prime is 9973. The next prime is 10007. The reversal of 9982 is 2899.

It is a happy number.

It is a nialpdrome in base 10 and base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 9982.

It is a congruent number.

It is an unprimeable number.

9982 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307 + ... + 337.

It is an arithmetic number, because the mean of its divisors is an integer number (1152).

2⁹⁹⁸² is an apocalyptic number.

9982 is a deficient number, since it is larger than the sum of its proper divisors (8450).

9982 is a wasteful number, since it uses less digits than its factorization.

9982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63.

The product of its digits is 1296, while the sum is 28.

The square root of 9982 is about 99.9099594635. The cubic root of 9982 is about 21.5314125284.

It can be divided in two parts, 998 and 2, that added together give a cube (1000 = 10³).

The spelling of 9982 in words is "nine thousand, nine hundred eighty-two".