26545439 has 2 divisors, whose sum is σ = 26545440. Its totient is φ = 26545438.

The previous prime is 26545423. The next prime is 26545481. The reversal of 26545439 is 93454562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26545439 - 2⁴ = 26545423 is a prime.

It is a Chen prime.

It is equal to p_1656479 and since 26545439 and 1656479 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26545499) 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, 13272719 + 13272720.

It is an arithmetic number, because the mean of its divisors is an integer number (13272720).

Almost surely, 2^26545439 is an apocalyptic number.

26545439 is a deficient number, since it is larger than the sum of its proper divisors (1).

26545439 is an equidigital number, since it uses as much as digits as its factorization.

26545439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 38.

The square root of 26545439 is about 5152.2266060413. The cubic root of 26545439 is about 298.3069034633.

The spelling of 26545439 in words is "twenty-six million, five hundred forty-five thousand, four hundred thirty-nine".