12438663 has 4 divisors (see below), whose sum is σ = 16584888. Its totient is φ = 8292440.

The previous prime is 12438659. The next prime is 12438677. The reversal of 12438663 is 36683421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36683421 = 3 ⋅12227807.

It is a cyclic number.

It is not a de Polignac number, because 12438663 - 2² = 12438659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438683) 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, 2073108 + ... + 2073113.

It is an arithmetic number, because the mean of its divisors is an integer number (4146222).

Almost surely, 2^12438663 is an apocalyptic number.

12438663 is a deficient number, since it is larger than the sum of its proper divisors (4146225).

12438663 is an equidigital number, since it uses as much as digits as its factorization.

12438663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146224.

The product of its digits is 20736, while the sum is 33.

The square root of 12438663 is about 3526.8488768304. The cubic root of 12438663 is about 231.6992175736.

The spelling of 12438663 in words is "twelve million, four hundred thirty-eight thousand, six hundred sixty-three".