289027 has 4 divisors (see below), whose sum is σ = 290160. Its totient is φ = 287896.

The previous prime is 289021. The next prime is 289031. The reversal of 289027 is 720982.

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.

It is a cyclic number.

It is not a de Polignac number, because 289027 - 2³ = 289019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 288986 and 289004.

It is not an unprimeable number, because it can be changed into a prime (289021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18 + ... + 760.

It is an arithmetic number, because the mean of its divisors is an integer number (72540).

2²⁸⁹⁰²⁷ is an apocalyptic number.

289027 is a deficient number, since it is larger than the sum of its proper divisors (1133).

289027 is an equidigital number, since it uses as much as digits as its factorization.

289027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 289027 is about 537.6123138471. The cubic root of 289027 is about 66.1169490617.

The spelling of 289027 in words is "two hundred eighty-nine thousand, twenty-seven".