13309889 has 2 divisors, whose sum is σ = 13309890. Its totient is φ = 13309888.

The previous prime is 13309853. The next prime is 13309897. The reversal of 13309889 is 98890331.

13309889 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., 9241600 + 4068289 = 3040^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 13309889 - 2¹² = 13305793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13329889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654944 + 6654945.

It is an arithmetic number, because the mean of its divisors is an integer number (6654945).

Almost surely, 2^13309889 is an apocalyptic number.

It is an amenable number.

13309889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13309889 is an equidigital number, since it uses as much as digits as its factorization.

13309889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 13309889 is about 3648.2720567414. The cubic root of 13309889 is about 236.9871571076.

The spelling of 13309889 in words is "thirteen million, three hundred nine thousand, eight hundred eighty-nine".