12861379 has 2 divisors, whose sum is σ = 12861380. Its totient is φ = 12861378.

The previous prime is 12861377. The next prime is 12861391. The reversal of 12861379 is 97316821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12861379 - 2¹ = 12861377 is a prime.

Together with 12861377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12861377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430689 + 6430690.

It is an arithmetic number, because the mean of its divisors is an integer number (6430690).

Almost surely, 2^12861379 is an apocalyptic number.

12861379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12861379 is an equidigital number, since it uses as much as digits as its factorization.

12861379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 12861379 is about 3586.2764812546. The cubic root of 12861379 is about 234.2947256704.

The spelling of 12861379 in words is "twelve million, eight hundred sixty-one thousand, three hundred seventy-nine".