12623749 has 2 divisors, whose sum is σ = 12623750. Its totient is φ = 12623748.

The previous prime is 12623731. The next prime is 12623759. The reversal of 12623749 is 94732621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 338724 = 3505^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 12623749 - 2⁵ = 12623717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12623759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311874 + 6311875.

It is an arithmetic number, because the mean of its divisors is an integer number (6311875).

Almost surely, 2^12623749 is an apocalyptic number.

It is an amenable number.

12623749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12623749 is an equidigital number, since it uses as much as digits as its factorization.

12623749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 12623749 is about 3552.9915564212. The cubic root of 12623749 is about 232.8427841541.

The spelling of 12623749 in words is "twelve million, six hundred twenty-three thousand, seven hundred forty-nine".