12752749 has 4 divisors (see below), whose sum is σ = 13164160. Its totient is φ = 12341340.

The previous prime is 12752723. The next prime is 12752759. The reversal of 12752749 is 94725721.

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 12752749 - 2¹¹ = 12750701 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 (12752759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205659 + ... + 205720.

It is an arithmetic number, because the mean of its divisors is an integer number (3291040).

Almost surely, 2^12752749 is an apocalyptic number.

It is an amenable number.

12752749 is a deficient number, since it is larger than the sum of its proper divisors (411411).

12752749 is an equidigital number, since it uses as much as digits as its factorization.

12752749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411410.

The product of its digits is 35280, while the sum is 37.

The square root of 12752749 is about 3571.0991305199. The cubic root of 12752749 is about 233.6332250566.

The spelling of 12752749 in words is "twelve million, seven hundred fifty-two thousand, seven hundred forty-nine".