13530889 has 2 divisors, whose sum is σ = 13530890. Its totient is φ = 13530888.

The previous prime is 13530871. The next prime is 13530893. The reversal of 13530889 is 98803531.

13530889 is digitally balanced in base 3, 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., 8602489 + 4928400 = 2933^2 + 2220^2 .

It is an emirp because it is prime and its reverse (98803531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13530889 - 2⁵ = 13530857 is a prime.

It is not a weakly prime, because it can be changed into another prime (13530809) 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, 6765444 + 6765445.

It is an arithmetic number, because the mean of its divisors is an integer number (6765445).

Almost surely, 2^13530889 is an apocalyptic number.

It is an amenable number.

13530889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530889 is an equidigital number, since it uses as much as digits as its factorization.

13530889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13530889 is about 3678.4356729458. The cubic root of 13530889 is about 238.2916240224.

The spelling of 13530889 in words is "thirteen million, five hundred thirty thousand, eight hundred eighty-nine".