289111 has 2 divisors, whose sum is σ = 289112. Its totient is φ = 289110.

The previous prime is 289109. The next prime is 289127. The reversal of 289111 is 111982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289111 - 2¹ = 289109 is a prime.

Together with 289109, it forms a pair of twin primes.

289111 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144555 + 144556.

It is an arithmetic number, because the mean of its divisors is an integer number (144556).

2²⁸⁹¹¹¹ is an apocalyptic number.

289111 is a deficient number, since it is larger than the sum of its proper divisors (1).

289111 is an equidigital number, since it uses as much as digits as its factorization.

289111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 22.

The square root of 289111 is about 537.6904313822. The cubic root of 289111 is about 66.1233536372.

It can be divided in two parts, 289 and 111, that added together give a square (400 = 20²).

The spelling of 289111 in words is "two hundred eighty-nine thousand, one hundred eleven".