12788969 has 4 divisors (see below), whose sum is σ = 12811344. Its totient is φ = 12766596.

The previous prime is 12788959. The next prime is 12788977. The reversal of 12788969 is 96988721.

12788969 is digitally balanced in base 3, 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: 96988721 = 223 ⋅434927.

It is a cyclic number.

It is not a de Polignac number, because 12788969 - 2¹⁶ = 12723433 is a prime.

It is a super-2 number, since 2×12788969² = 327115456165922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12788959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10307 + ... + 11480.

It is an arithmetic number, because the mean of its divisors is an integer number (3202836).

Almost surely, 2^12788969 is an apocalyptic number.

It is an amenable number.

12788969 is a deficient number, since it is larger than the sum of its proper divisors (22375).

12788969 is an equidigital number, since it uses as much as digits as its factorization.

12788969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22374.

The product of its digits is 435456, while the sum is 50.

The square root of 12788969 is about 3576.1668025974. The cubic root of 12788969 is about 233.8542021616.

The spelling of 12788969 in words is "twelve million, seven hundred eighty-eight thousand, nine hundred sixty-nine".