289139 has 2 divisors, whose sum is σ = 289140. Its totient is φ = 289138.

The previous prime is 289129. The next prime is 289141. The reversal of 289139 is 931982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289139 is a prime.

It is a super-2 number, since 2×289139² = 167202722642, which contains 22 as substring.

Together with 289141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (289109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144569 + 144570.

It is an arithmetic number, because the mean of its divisors is an integer number (144570).

2²⁸⁹¹³⁹ is an apocalyptic number.

289139 is a deficient number, since it is larger than the sum of its proper divisors (1).

289139 is an equidigital number, since it uses as much as digits as its factorization.

289139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 289139 is about 537.7164680387. The cubic root of 289139 is about 66.1254882201.

The spelling of 289139 in words is "two hundred eighty-nine thousand, one hundred thirty-nine".