13026439 has 2 divisors, whose sum is σ = 13026440. Its totient is φ = 13026438.

The previous prime is 13026427. The next prime is 13026449. The reversal of 13026439 is 93462031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13026439 - 2⁷ = 13026311 is a prime.

It is a super-2 number, since 2×13026439² = 339376226041442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13026449) 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, 6513219 + 6513220.

It is an arithmetic number, because the mean of its divisors is an integer number (6513220).

Almost surely, 2^13026439 is an apocalyptic number.

13026439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13026439 is an equidigital number, since it uses as much as digits as its factorization.

13026439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 13026439 is about 3609.2158428113. The cubic root of 13026439 is about 235.2927632361.

It can be divided in two parts, 130 and 26439, that added together give a square (26569 = 163²).

The spelling of 13026439 in words is "thirteen million, twenty-six thousand, four hundred thirty-nine".