12919843 has 2 divisors, whose sum is σ = 12919844. Its totient is φ = 12919842.

The previous prime is 12919817. The next prime is 12919853. The reversal of 12919843 is 34891921.

It is a strong prime.

It is an emirp because it is prime and its reverse (34891921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12919843 - 2¹³ = 12911651 is a prime.

It is not a weakly prime, because it can be changed into another prime (12919853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459921 + 6459922.

It is an arithmetic number, because the mean of its divisors is an integer number (6459922).

Almost surely, 2^12919843 is an apocalyptic number.

12919843 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919843 is an equidigital number, since it uses as much as digits as its factorization.

12919843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 12919843 is about 3594.4183117717. The cubic root of 12919843 is about 234.6492004566.

The spelling of 12919843 in words is "twelve million, nine hundred nineteen thousand, eight hundred forty-three".