12936197 has 4 divisors (see below), whose sum is σ = 13251756. Its totient is φ = 12620640.

The previous prime is 12936191. The next prime is 12936221. The reversal of 12936197 is 79163921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79163921 = 241 ⋅328481.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 10719076 = 1489^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 12936197 - 2¹⁰ = 12935173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12936197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12936191) 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, 157718 + ... + 157799.

It is an arithmetic number, because the mean of its divisors is an integer number (3312939).

Almost surely, 2^12936197 is an apocalyptic number.

It is an amenable number.

12936197 is a deficient number, since it is larger than the sum of its proper divisors (315559).

12936197 is an equidigital number, since it uses as much as digits as its factorization.

12936197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315558.

The product of its digits is 20412, while the sum is 38.

The square root of 12936197 is about 3596.6925084027. The cubic root of 12936197 is about 234.7481654106.

The spelling of 12936197 in words is "twelve million, nine hundred thirty-six thousand, one hundred ninety-seven".