26239879 has 2 divisors, whose sum is σ = 26239880. Its totient is φ = 26239878.

The previous prime is 26239861. The next prime is 26239909. The reversal of 26239879 is 97893262.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26239879 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26239819) 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, 13119939 + 13119940.

It is an arithmetic number, because the mean of its divisors is an integer number (13119940).

Almost surely, 2^26239879 is an apocalyptic number.

26239879 is a deficient number, since it is larger than the sum of its proper divisors (1).

26239879 is an equidigital number, since it uses as much as digits as its factorization.

26239879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 26239879 is about 5122.4875792919. The cubic root of 26239879 is about 297.1578968970.

The spelling of 26239879 in words is "twenty-six million, two hundred thirty-nine thousand, eight hundred seventy-nine".