12863447 has 4 divisors (see below), whose sum is σ = 12883800. Its totient is φ = 12843096.

The previous prime is 12863429. The next prime is 12863453. The reversal of 12863447 is 74436821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74436821 = 787 ⋅94583.

It is a cyclic number.

It is not a de Polignac number, because 12863447 - 2¹² = 12859351 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 (12863467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9197 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (3220950).

Almost surely, 2^12863447 is an apocalyptic number.

12863447 is a deficient number, since it is larger than the sum of its proper divisors (20353).

12863447 is an equidigital number, since it uses as much as digits as its factorization.

12863447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20352.

The product of its digits is 32256, while the sum is 35.

The square root of 12863447 is about 3586.5647909943. The cubic root of 12863447 is about 234.3072825283.

The spelling of 12863447 in words is "twelve million, eight hundred sixty-three thousand, four hundred forty-seven".