289679 has 4 divisors (see below), whose sum is σ = 311976. Its totient is φ = 267384.

The previous prime is 289669. The next prime is 289717. The reversal of 289679 is 976982.

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

It is not a de Polignac number, because 289679 - 2⁸ = 289423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289669) 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, 11129 + ... + 11154.

It is an arithmetic number, because the mean of its divisors is an integer number (77994).

2²⁸⁹⁶⁷⁹ is an apocalyptic number.

289679 is a deficient number, since it is larger than the sum of its proper divisors (22297).

289679 is a wasteful number, since it uses less digits than its factorization.

289679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22296.

The product of its digits is 54432, while the sum is 41.

The square root of 289679 is about 538.2183571749. The cubic root of 289679 is about 66.1666282453.

The spelling of 289679 in words is "two hundred eighty-nine thousand, six hundred seventy-nine".