289109 has 2 divisors, whose sum is σ = 289110. Its totient is φ = 289108.

The previous prime is 289103. The next prime is 289111. The reversal of 289109 is 901982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253009 + 36100 = 503^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 289109 - 2⁸ = 288853 is a prime.

Together with 289111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289109.

It is not a weakly prime, because it can be changed into another prime (289103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144554 + 144555.

It is an arithmetic number, because the mean of its divisors is an integer number (144555).

2²⁸⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

289109 is a deficient number, since it is larger than the sum of its proper divisors (1).

289109 is an equidigital number, since it uses as much as digits as its factorization.

289109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 289109 is about 537.6885715728. The cubic root of 289109 is about 66.1232011618.

The spelling of 289109 in words is "two hundred eighty-nine thousand, one hundred nine".