289213 has 2 divisors, whose sum is σ = 289214. Its totient is φ = 289212.

The previous prime is 289193. The next prime is 289241. The reversal of 289213 is 312982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248004 + 41209 = 498^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 289213 - 2⁵ = 289181 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 8⁴ + 2¹⁸ + 9⁴ + 1 + 3³ .

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289243) 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, 144606 + 144607.

It is an arithmetic number, because the mean of its divisors is an integer number (144607).

2²⁸⁹²¹³ is an apocalyptic number.

It is an amenable number.

289213 is a deficient number, since it is larger than the sum of its proper divisors (1).

289213 is an equidigital number, since it uses as much as digits as its factorization.

289213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 289213 is about 537.7852731342. The cubic root of 289213 is about 66.1311289543.

The spelling of 289213 in words is "two hundred eighty-nine thousand, two hundred thirteen".