289998 has 12 divisors (see below), whose sum is σ = 628368. Its totient is φ = 96660.

The previous prime is 289987. The next prime is 289999. The reversal of 289998 is 899982.

289998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289999) by changing a digit.

289998 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 5 ways as a sum of consecutive naturals, for example, 8038 + ... + 8073.

It is an arithmetic number, because the mean of its divisors is an integer number (52364).

2²⁸⁹⁹⁹⁸ is an apocalyptic number.

289998 is an abundant number, since it is smaller than the sum of its proper divisors (338370).

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

289998 is a wasteful number, since it uses less digits than its factorization.

289998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16119 (or 16116 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 289998 is about 538.5146237569. The cubic root of 289998 is about 66.1909073166.

It can be divided in two parts, 2 and 89998, that added together give a square (90000 = 300²).

The spelling of 289998 in words is "two hundred eighty-nine thousand, nine hundred ninety-eight".