12859381 has 2 divisors, whose sum is σ = 12859382. Its totient is φ = 12859380.

The previous prime is 12859351. The next prime is 12859411. The reversal of 12859381 is 18395821.

It is a balanced prime because it is at equal distance from previous prime (12859351) and next prime (12859411).

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 6275025 = 2566^2 + 2505^2 .

It is a cyclic number.

It is not a de Polignac number, because 12859381 - 2¹¹ = 12857333 is a prime.

It is a super-2 number, since 2×12859381² = 330727359406322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12859381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12859321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6429690 + 6429691.

It is an arithmetic number, because the mean of its divisors is an integer number (6429691).

Almost surely, 2^12859381 is an apocalyptic number.

It is an amenable number.

12859381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12859381 is an equidigital number, since it uses as much as digits as its factorization.

12859381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 12859381 is about 3585.9979085326. The cubic root of 12859381 is about 234.2825925726.

The spelling of 12859381 in words is "twelve million, eight hundred fifty-nine thousand, three hundred eighty-one".