12609823 has 2 divisors, whose sum is σ = 12609824. Its totient is φ = 12609822.

The previous prime is 12609803. The next prime is 12609829. The reversal of 12609823 is 32890621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12609823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12609829) 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, 6304911 + 6304912.

It is an arithmetic number, because the mean of its divisors is an integer number (6304912).

Almost surely, 2^12609823 is an apocalyptic number.

12609823 is a deficient number, since it is larger than the sum of its proper divisors (1).

12609823 is an equidigital number, since it uses as much as digits as its factorization.

12609823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12609823 is about 3551.0312586628. The cubic root of 12609823 is about 232.7571317936.

The spelling of 12609823 in words is "twelve million, six hundred nine thousand, eight hundred twenty-three".