12749923 has 2 divisors, whose sum is σ = 12749924. Its totient is φ = 12749922.

The previous prime is 12749921. The next prime is 12749951. The reversal of 12749923 is 32994721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12749923 - 2¹ = 12749921 is a prime.

Together with 12749921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12749921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6374961 + 6374962.

It is an arithmetic number, because the mean of its divisors is an integer number (6374962).

Almost surely, 2^12749923 is an apocalyptic number.

12749923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749923 is an equidigital number, since it uses as much as digits as its factorization.

12749923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 12749923 is about 3570.7034320985. The cubic root of 12749923 is about 233.6159661301.

The spelling of 12749923 in words is "twelve million, seven hundred forty-nine thousand, nine hundred twenty-three".