12438823 has 2 divisors, whose sum is σ = 12438824. Its totient is φ = 12438822.

The previous prime is 12438817. The next prime is 12438827. The reversal of 12438823 is 32883421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12438823 - 2⁹ = 12438311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12438827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219411 + 6219412.

It is an arithmetic number, because the mean of its divisors is an integer number (6219412).

Almost surely, 2^12438823 is an apocalyptic number.

12438823 is a deficient number, since it is larger than the sum of its proper divisors (1).

12438823 is an equidigital number, since it uses as much as digits as its factorization.

12438823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 12438823 is about 3526.8715598955. The cubic root of 12438823 is about 231.7002110275.

The spelling of 12438823 in words is "twelve million, four hundred thirty-eight thousand, eight hundred twenty-three".