289211 has 4 divisors (see below), whose sum is σ = 311472. Its totient is φ = 266952.

The previous prime is 289193. The next prime is 289213. The reversal of 289211 is 112982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289211 - 2¹⁸ = 27067 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289211.

It is not an unprimeable number, because it can be changed into a prime (289213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111 + ... + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (77868).

2²⁸⁹²¹¹ is an apocalyptic number.

289211 is a deficient number, since it is larger than the sum of its proper divisors (22261).

289211 is a wasteful number, since it uses less digits than its factorization.

289211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22260.

The product of its digits is 288, while the sum is 23.

The square root of 289211 is about 537.7834136527. The cubic root of 289211 is about 66.1309765146.

The spelling of 289211 in words is "two hundred eighty-nine thousand, two hundred eleven".