12897799 has 4 divisors (see below), whose sum is σ = 13030864. Its totient is φ = 12764736.

The previous prime is 12897769. The next prime is 12897803. The reversal of 12897799 is 99779821.

12897799 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 an emirpimes, since its reverse is a distinct semiprime: 99779821 = 2677 ⋅37273.

It is a cyclic number.

It is not a de Polignac number, because 12897799 - 2¹³ = 12889607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897769) 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, 66387 + ... + 66580.

It is an arithmetic number, because the mean of its divisors is an integer number (3257716).

Almost surely, 2^12897799 is an apocalyptic number.

12897799 is a deficient number, since it is larger than the sum of its proper divisors (133065).

12897799 is an equidigital number, since it uses as much as digits as its factorization.

12897799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133064.

The product of its digits is 571536, while the sum is 52.

The square root of 12897799 is about 3591.3505816058. The cubic root of 12897799 is about 234.5156706703.

The spelling of 12897799 in words is "twelve million, eight hundred ninety-seven thousand, seven hundred ninety-nine".