12887219 has 2 divisors, whose sum is σ = 12887220. Its totient is φ = 12887218.

The previous prime is 12887213. The next prime is 12887239. The reversal of 12887219 is 91278821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12887219 - 2⁸ = 12886963 is a prime.

It is a super-2 number, since 2×12887219² = 332160827107922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12887213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443609 + 6443610.

It is an arithmetic number, because the mean of its divisors is an integer number (6443610).

Almost surely, 2^12887219 is an apocalyptic number.

12887219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12887219 is an equidigital number, since it uses as much as digits as its factorization.

12887219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 38.

The square root of 12887219 is about 3589.8772959532. The cubic root of 12887219 is about 234.4515291183.

The spelling of 12887219 in words is "twelve million, eight hundred eighty-seven thousand, two hundred nineteen".