12749307 has 4 divisors (see below), whose sum is σ = 16999080. Its totient is φ = 8499536.

The previous prime is 12749293. The next prime is 12749311. The reversal of 12749307 is 70394721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70394721 = 3 ⋅23464907.

It is a cyclic number.

It is not a de Polignac number, because 12749307 - 2⁷ = 12749179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12749327) 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, 2124882 + ... + 2124887.

It is an arithmetic number, because the mean of its divisors is an integer number (4249770).

Almost surely, 2^12749307 is an apocalyptic number.

12749307 is a deficient number, since it is larger than the sum of its proper divisors (4249773).

12749307 is an equidigital number, since it uses as much as digits as its factorization.

12749307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249772.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 12749307 is about 3570.6171735430. The cubic root of 12749307 is about 233.6122037609.

The spelling of 12749307 in words is "twelve million, seven hundred forty-nine thousand, three hundred seven".