208989 has 12 divisors (see below), whose sum is σ = 329472. Its totient is φ = 126600.

The previous prime is 208963. The next prime is 208991. The reversal of 208989 is 989802.

208989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208989 - 2¹³ = 200797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (27456).

2²⁰⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

208989 is a deficient number, since it is larger than the sum of its proper divisors (120483).

208989 is a wasteful number, since it uses less digits than its factorization.

208989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 208989 is about 457.1531472056. The cubic root of 208989 is about 59.3436802503.

It can be divided in two parts, 20 and 8989, that added together give a palindrome (9009).

The spelling of 208989 in words is "two hundred eight thousand, nine hundred eighty-nine".