13309297 has 4 divisors (see below), whose sum is σ = 13633956. Its totient is φ = 12984640.

The previous prime is 13309277. The next prime is 13309301. The reversal of 13309297 is 79290331.

13309297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2313441 + 10995856 = 1521^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 13309297 - 2⁷ = 13309169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13309217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162268 + ... + 162349.

It is an arithmetic number, because the mean of its divisors is an integer number (3408489).

Almost surely, 2^13309297 is an apocalyptic number.

It is an amenable number.

13309297 is a deficient number, since it is larger than the sum of its proper divisors (324659).

13309297 is an equidigital number, since it uses as much as digits as its factorization.

13309297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324658.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13309297 is about 3648.1909215391. The cubic root of 13309297 is about 236.9836434675.

The spelling of 13309297 in words is "thirteen million, three hundred nine thousand, two hundred ninety-seven".