12387863 has 4 divisors (see below), whose sum is σ = 12690048. Its totient is φ = 12085680.

The previous prime is 12387853. The next prime is 12387871. The reversal of 12387863 is 36878321.

It is a happy number.

12387863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36878321 = 17 ⋅2169313.

It is a cyclic number.

It is not a de Polignac number, because 12387863 - 2⁴ = 12387847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151031 + ... + 151112.

It is an arithmetic number, because the mean of its divisors is an integer number (3172512).

Almost surely, 2^12387863 is an apocalyptic number.

12387863 is a deficient number, since it is larger than the sum of its proper divisors (302185).

12387863 is an equidigital number, since it uses as much as digits as its factorization.

12387863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302184.

The product of its digits is 48384, while the sum is 38.

The square root of 12387863 is about 3519.6396122330. The cubic root of 12387863 is about 231.3833642220.

The spelling of 12387863 in words is "twelve million, three hundred eighty-seven thousand, eight hundred sixty-three".