13308389 has 2 divisors, whose sum is σ = 13308390. Its totient is φ = 13308388.

The previous prime is 13308377. The next prime is 13308391. The reversal of 13308389 is 98380331.

13308389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10452289 + 2856100 = 3233^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 13308389 - 2⁸ = 13308133 is a prime.

It is a super-2 number, since 2×13308389² = 354226435550642, which contains 22 as substring.

Together with 13308391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13308319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654194 + 6654195.

It is an arithmetic number, because the mean of its divisors is an integer number (6654195).

Almost surely, 2^13308389 is an apocalyptic number.

It is an amenable number.

13308389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13308389 is an equidigital number, since it uses as much as digits as its factorization.

13308389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 13308389 is about 3648.0664741751. The cubic root of 13308389 is about 236.9782541010.

The spelling of 13308389 in words is "thirteen million, three hundred eight thousand, three hundred eighty-nine".