26839859 has 2 divisors, whose sum is σ = 26839860. Its totient is φ = 26839858.

The previous prime is 26839853. The next prime is 26839861. The reversal of 26839859 is 95893862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26839859 - 2¹² = 26835763 is a prime.

It is a super-2 number, since 2×26839859² = 1440756062279762, which contains 22 as substring.

Together with 26839861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26839853) 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, 13419929 + 13419930.

It is an arithmetic number, because the mean of its divisors is an integer number (13419930).

Almost surely, 2^26839859 is an apocalyptic number.

26839859 is a deficient number, since it is larger than the sum of its proper divisors (1).

26839859 is an equidigital number, since it uses as much as digits as its factorization.

26839859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 26839859 is about 5180.7199306660. The cubic root of 26839859 is about 299.4057086887.

The spelling of 26839859 in words is "twenty-six million, eight hundred thirty-nine thousand, eight hundred fifty-nine".