13289897 has 4 divisors (see below), whose sum is σ = 13317456. Its totient is φ = 13262340.

The previous prime is 13289839. The next prime is 13289923. The reversal of 13289897 is 79898231.

13289897 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79898231 = 7 ⋅11414033.

It is a cyclic number.

It is not a de Polignac number, because 13289897 - 2⁶ = 13289833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13289827) 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, 13043 + ... + 14024.

It is an arithmetic number, because the mean of its divisors is an integer number (3329364).

Almost surely, 2^13289897 is an apocalyptic number.

It is an amenable number.

13289897 is a deficient number, since it is larger than the sum of its proper divisors (27559).

13289897 is an equidigital number, since it uses as much as digits as its factorization.

13289897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27558.

The product of its digits is 217728, while the sum is 47.

The square root of 13289897 is about 3645.5310998536. The cubic root of 13289897 is about 236.8684428350.

The spelling of 13289897 in words is "thirteen million, two hundred eighty-nine thousand, eight hundred ninety-seven".