13308289 has 2 divisors, whose sum is σ = 13308290. Its totient is φ = 13308288.

The previous prime is 13308257. The next prime is 13308293. The reversal of 13308289 is 98280331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 4410000 = 2983^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 13308289 - 2⁵ = 13308257 is a prime.

It is a super-2 number, since 2×13308289² = 354221112215042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13308089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654144 + 6654145.

It is an arithmetic number, because the mean of its divisors is an integer number (6654145).

Almost surely, 2^13308289 is an apocalyptic number.

It is an amenable number.

13308289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13308289 is an equidigital number, since it uses as much as digits as its factorization.

13308289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 13308289 is about 3648.0527682587. The cubic root of 13308289 is about 236.9776605434.

The spelling of 13308289 in words is "thirteen million, three hundred eight thousand, two hundred eighty-nine".