12819899 has 2 divisors, whose sum is σ = 12819900. Its totient is φ = 12819898.

The previous prime is 12819881. The next prime is 12819907. The reversal of 12819899 is 99891821.

It is a strong prime.

It is an emirp because it is prime and its reverse (99891821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12819899 - 2⁸ = 12819643 is a prime.

It is not a weakly prime, because it can be changed into another prime (12819869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409949 + 6409950.

It is an arithmetic number, because the mean of its divisors is an integer number (6409950).

Almost surely, 2^12819899 is an apocalyptic number.

12819899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12819899 is an equidigital number, since it uses as much as digits as its factorization.

12819899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 47.

The square root of 12819899 is about 3580.4886538013. The cubic root of 12819899 is about 234.0425751056.

The spelling of 12819899 in words is "twelve million, eight hundred nineteen thousand, eight hundred ninety-nine".