12386987 has 2 divisors, whose sum is σ = 12386988. Its totient is φ = 12386986.

The previous prime is 12386977. The next prime is 12386989. The reversal of 12386987 is 78968321.

12386987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12386987 - 2¹⁰ = 12385963 is a prime.

Together with 12386989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12386989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6193493 + 6193494.

It is an arithmetic number, because the mean of its divisors is an integer number (6193494).

Almost surely, 2^12386987 is an apocalyptic number.

12386987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12386987 is an equidigital number, since it uses as much as digits as its factorization.

12386987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 12386987 is about 3519.5151654738. The cubic root of 12386987 is about 231.3779100500.

The spelling of 12386987 in words is "twelve million, three hundred eighty-six thousand, nine hundred eighty-seven".