12749951 has 2 divisors, whose sum is σ = 12749952. Its totient is φ = 12749950.

The previous prime is 12749923. The next prime is 12749953. The reversal of 12749951 is 15994721.

It is a strong prime.

It is an emirp because it is prime and its reverse (15994721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12749951 is a prime.

It is a super-2 number, since 2×12749951² = 325122501004802, which contains 22 as substring.

Together with 12749953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12749953) 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 as a sum of consecutive naturals, namely, 6374975 + 6374976.

It is an arithmetic number, because the mean of its divisors is an integer number (6374976).

Almost surely, 2^12749951 is an apocalyptic number.

12749951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749951 is an equidigital number, since it uses as much as digits as its factorization.

12749951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The square root of 12749951 is about 3570.7073528924. The cubic root of 12749951 is about 233.6161371440.

The spelling of 12749951 in words is "twelve million, seven hundred forty-nine thousand, nine hundred fifty-one".