249589 has 2 divisors, whose sum is σ = 249590. Its totient is φ = 249588.

The previous prime is 249583. The next prime is 249593. The reversal of 249589 is 985942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 47089 = 450^2 + 217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124794 + 124795.

It is an arithmetic number, because the mean of its divisors is an integer number (124795).

2²⁴⁹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

249589 is a deficient number, since it is larger than the sum of its proper divisors (1).

249589 is an equidigital number, since it uses as much as digits as its factorization.

249589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 249589 is about 499.5888309400. The cubic root of 249589 is about 62.9615117227.

It can be divided in two parts, 249 and 589, that added together give a palindrome (838).

The spelling of 249589 in words is "two hundred forty-nine thousand, five hundred eighty-nine".