289897 has 2 divisors, whose sum is σ = 289898. Its totient is φ = 289896.

The previous prime is 289889. The next prime is 289937. The reversal of 289897 is 798982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287296 + 2601 = 536^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 289897 - 2³ = 289889 is a prime.

It is not a weakly prime, because it can be changed into another prime (289837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144948 + 144949.

It is an arithmetic number, because the mean of its divisors is an integer number (144949).

2²⁸⁹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

289897 is a deficient number, since it is larger than the sum of its proper divisors (1).

289897 is an equidigital number, since it uses as much as digits as its factorization.

289897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 289897 is about 538.4208391212. The cubic root of 289897 is about 66.1832221395.

The spelling of 289897 in words is "two hundred eighty-nine thousand, eight hundred ninety-seven".