169984 has 24 divisors (see below), whose sum is σ = 343980. Its totient is φ = 83968.

The previous prime is 169957. The next prime is 169987. The reversal of 169984 is 489961.

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 2007 + ... + 2089.

2¹⁶⁹⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171990).

169984 is an abundant number, since it is smaller than the sum of its proper divisors (173996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169984 is an frugal number, since it uses more digits than its factorization.

169984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 85 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 169984 is about 412.2911592552. The cubic root of 169984 is about 55.3948445810.

It can be divided in two parts, 16 and 9984, that added together give a 4-th power (10000 = 10⁴).

The spelling of 169984 in words is "one hundred sixty-nine thousand, nine hundred eighty-four".