12927749 has 4 divisors (see below), whose sum is σ = 12982080. Its totient is φ = 12873420.

The previous prime is 12927743. The next prime is 12927757. The reversal of 12927749 is 94772921.

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.

It is a cyclic number.

It is not a de Polignac number, because 12927749 - 2²⁰ = 11879173 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 (12927743) 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, 26807 + ... + 27284.

It is an arithmetic number, because the mean of its divisors is an integer number (3245520).

Almost surely, 2^12927749 is an apocalyptic number.

It is an amenable number.

12927749 is a deficient number, since it is larger than the sum of its proper divisors (54331).

12927749 is an equidigital number, since it uses as much as digits as its factorization.

12927749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54330.

The product of its digits is 63504, while the sum is 41.

The square root of 12927749 is about 3595.5179042803. The cubic root of 12927749 is about 234.6970534195.

The spelling of 12927749 in words is "twelve million, nine hundred twenty-seven thousand, seven hundred forty-nine".