12809983 has 2 divisors, whose sum is σ = 12809984. Its totient is φ = 12809982.

The previous prime is 12809969. The next prime is 12809987. The reversal of 12809983 is 38990821.

It is a strong prime.

It is an emirp because it is prime and its reverse (38990821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12809983 is a prime.

It is equal to p₈₃₇₆₈₈ and since 12809983 and 837688 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12809987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404991 + 6404992.

It is an arithmetic number, because the mean of its divisors is an integer number (6404992).

Almost surely, 2^12809983 is an apocalyptic number.

12809983 is a deficient number, since it is larger than the sum of its proper divisors (1).

12809983 is an equidigital number, since it uses as much as digits as its factorization.

12809983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 12809983 is about 3579.1036587392. The cubic root of 12809983 is about 233.9822167312.

The spelling of 12809983 in words is "twelve million, eight hundred nine thousand, nine hundred eighty-three".