12799289 has 4 divisors (see below), whose sum is σ = 12847140. Its totient is φ = 12751440.

The previous prime is 12799279. The next prime is 12799291. The reversal of 12799289 is 98299721.

It is a happy number.

12799289 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 an emirpimes, since its reverse is a distinct semiprime: 98299721 = 13 ⋅7561517.

It can be written as a sum of positive squares in 2 ways, for example, as 4579600 + 8219689 = 2140^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 12799289 - 2⁴ = 12799273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12799219) 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, 23522 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (3211785).

Almost surely, 2^12799289 is an apocalyptic number.

It is an amenable number.

12799289 is a deficient number, since it is larger than the sum of its proper divisors (47851).

12799289 is an equidigital number, since it uses as much as digits as its factorization.

12799289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47850.

The product of its digits is 163296, while the sum is 47.

The square root of 12799289 is about 3577.6093973490. The cubic root of 12799289 is about 233.9170877756.

The spelling of 12799289 in words is "twelve million, seven hundred ninety-nine thousand, two hundred eighty-nine".