289279 has 4 divisors (see below), whose sum is σ = 290376. Its totient is φ = 288184.

The previous prime is 289273. The next prime is 289283. The reversal of 289279 is 972982.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 972982 = 2 ⋅486491.

It is a cyclic number.

It is not a de Polignac number, because 289279 - 2⁷ = 289151 is a prime.

It is a Duffinian number.

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 (289273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117 + ... + 769.

It is an arithmetic number, because the mean of its divisors is an integer number (72594).

2²⁸⁹²⁷⁹ is an apocalyptic number.

289279 is a deficient number, since it is larger than the sum of its proper divisors (1097).

289279 is an equidigital number, since it uses as much as digits as its factorization.

289279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096.

The product of its digits is 18144, while the sum is 37.

The square root of 289279 is about 537.8466324149. The cubic root of 289279 is about 66.1361590676.

The spelling of 289279 in words is "two hundred eighty-nine thousand, two hundred seventy-nine".