26238389 has 2 divisors, whose sum is σ = 26238390. Its totient is φ = 26238388.

The previous prime is 26238379. The next prime is 26238397. The reversal of 26238389 is 98383262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21252100 + 4986289 = 4610^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 26238389 - 2²⁴ = 9461173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26238379) 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, 13119194 + 13119195.

It is an arithmetic number, because the mean of its divisors is an integer number (13119195).

Almost surely, 2^26238389 is an apocalyptic number.

It is an amenable number.

26238389 is a deficient number, since it is larger than the sum of its proper divisors (1).

26238389 is an equidigital number, since it uses as much as digits as its factorization.

26238389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 26238389 is about 5122.3421400762. The cubic root of 26238389 is about 297.1522722058.

The spelling of 26238389 in words is "twenty-six million, two hundred thirty-eight thousand, three hundred eighty-nine".