289273 has 2 divisors, whose sum is σ = 289274. Its totient is φ = 289272.

The previous prime is 289253. The next prime is 289283. The reversal of 289273 is 372982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284089 + 5184 = 533^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 289273 - 2⁵ = 289241 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 8⁴ + 2¹⁸ + 9² + 7 + 3⁸ .

It is not a weakly prime, because it can be changed into another prime (289213) 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 as a sum of consecutive naturals, namely, 144636 + 144637.

It is an arithmetic number, because the mean of its divisors is an integer number (144637).

2²⁸⁹²⁷³ is an apocalyptic number.

It is an amenable number.

289273 is a deficient number, since it is larger than the sum of its proper divisors (1).

289273 is an equidigital number, since it uses as much as digits as its factorization.

289273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 289273 is about 537.8410545877. The cubic root of 289273 is about 66.1357018162.

The spelling of 289273 in words is "two hundred eighty-nine thousand, two hundred seventy-three".