12861983 has 2 divisors, whose sum is σ = 12861984. Its totient is φ = 12861982.

The previous prime is 12861949. The next prime is 12861997. The reversal of 12861983 is 38916821.

It is a strong prime.

It is an emirp because it is prime and its reverse (38916821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12861983 - 2¹⁶ = 12796447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12864983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430991 + 6430992.

It is an arithmetic number, because the mean of its divisors is an integer number (6430992).

Almost surely, 2^12861983 is an apocalyptic number.

12861983 is a deficient number, since it is larger than the sum of its proper divisors (1).

12861983 is an equidigital number, since it uses as much as digits as its factorization.

12861983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 12861983 is about 3586.3606901705. The cubic root of 12861983 is about 234.2983932864.

The spelling of 12861983 in words is "twelve million, eight hundred sixty-one thousand, nine hundred eighty-three".