26489 has 2 divisors, whose sum is σ = 26490. Its totient is φ = 26488.

The previous prime is 26479. The next prime is 26497. The reversal of 26489 is 98462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19600 + 6889 = 140^2 + 83^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26489 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 26489.

It is not a weakly prime, because it can be changed into another prime (26449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13244 + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (13245).

2²⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

26489 is a deficient number, since it is larger than the sum of its proper divisors (1).

26489 is an equidigital number, since it uses as much as digits as its factorization.

26489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 26489 is about 162.7544162227. The cubic root of 26489 is about 29.8095340573.

It can be divided in two parts, 2648 and 9, that multiplied together give a palindrome (23832).

The spelling of 26489 in words is "twenty-six thousand, four hundred eighty-nine".