169982 has 4 divisors (see below), whose sum is σ = 254976. Its totient is φ = 84990.

The previous prime is 169957. The next prime is 169987. The reversal of 169982 is 289961.

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

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 169982.

It is not an unprimeable number, because it can be changed into a prime (169987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42494 + ... + 42497.

It is an arithmetic number, because the mean of its divisors is an integer number (63744).

2¹⁶⁹⁹⁸² is an apocalyptic number.

169982 is a deficient number, since it is larger than the sum of its proper divisors (84994).

169982 is an equidigital number, since it uses as much as digits as its factorization.

169982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84993.

The product of its digits is 7776, while the sum is 35.

The square root of 169982 is about 412.2887337777. The cubic root of 169982 is about 55.3946273250.

The spelling of 169982 in words is "one hundred sixty-nine thousand, nine hundred eighty-two".