169983 has 24 divisors (see below), whose sum is σ = 286416. Its totient is φ = 96000.

The previous prime is 169957. The next prime is 169987. The reversal of 169983 is 389961.

It is not a de Polignac number, because 169983 - 2⁵ = 169951 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1633 + ... + 1733.

It is an arithmetic number, because the mean of its divisors is an integer number (11934).

2¹⁶⁹⁹⁸³ is an apocalyptic number.

169983 is a deficient number, since it is larger than the sum of its proper divisors (116433).

169983 is a wasteful number, since it uses less digits than its factorization.

169983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 132 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 169983 is about 412.2899465182. The cubic root of 169983 is about 55.3947359532.

It can be divided in two parts, 16 and 9983, that added together give a palindrome (9999).

The spelling of 169983 in words is "one hundred sixty-nine thousand, nine hundred eighty-three".