12749317 has 4 divisors (see below), whose sum is σ = 14570656. Its totient is φ = 10927980.

The previous prime is 12749311. The next prime is 12749327. The reversal of 12749317 is 71394721.

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 not a de Polignac number, because 12749317 - 2⁷ = 12749189 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 (12749311) 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, 910659 + ... + 910672.

It is an arithmetic number, because the mean of its divisors is an integer number (3642664).

Almost surely, 2^12749317 is an apocalyptic number.

It is an amenable number.

12749317 is a deficient number, since it is larger than the sum of its proper divisors (1821339).

12749317 is an equidigital number, since it uses as much as digits as its factorization.

12749317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821338.

The product of its digits is 10584, while the sum is 34.

The square root of 12749317 is about 3570.6185738608. The cubic root of 12749317 is about 233.6122648393.

The spelling of 12749317 in words is "twelve million, seven hundred forty-nine thousand, three hundred seventeen".