13286389 has 2 divisors, whose sum is σ = 13286390. Its totient is φ = 13286388.

The previous prime is 13286369. The next prime is 13286393. The reversal of 13286389 is 98368231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 966289 = 3510^2 + 983^2 .

It is a cyclic number.

It is not a de Polignac number, because 13286389 - 2⁷ = 13286261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13286369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643194 + 6643195.

It is an arithmetic number, because the mean of its divisors is an integer number (6643195).

Almost surely, 2^13286389 is an apocalyptic number.

It is an amenable number.

13286389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13286389 is an equidigital number, since it uses as much as digits as its factorization.

13286389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 13286389 is about 3645.0499310709. The cubic root of 13286389 is about 236.8475997434.

The spelling of 13286389 in words is "thirteen million, two hundred eighty-six thousand, three hundred eighty-nine".