12997199 has 4 divisors (see below), whose sum is σ = 13064736. Its totient is φ = 12929664.

The previous prime is 12997181. The next prime is 12997207. The reversal of 12997199 is 99179921.

It is a happy number.

12997199 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12997199 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 (12997099) 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, 33479 + ... + 33864.

It is an arithmetic number, because the mean of its divisors is an integer number (3266184).

Almost surely, 2^12997199 is an apocalyptic number.

12997199 is a deficient number, since it is larger than the sum of its proper divisors (67537).

12997199 is an equidigital number, since it uses as much as digits as its factorization.

12997199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67536.

The product of its digits is 91854, while the sum is 47.

The square root of 12997199 is about 3605.1628257265. The cubic root of 12997199 is about 235.1165801528.

The spelling of 12997199 in words is "twelve million, nine hundred ninety-seven thousand, one hundred ninety-nine".