12163859 has 4 divisors (see below), whose sum is σ = 12191400. Its totient is φ = 12136320.

The previous prime is 12163843. The next prime is 12163937. The reversal of 12163859 is 95836121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95836121 = 43 ⋅2228747.

It is a cyclic number.

It is not a de Polignac number, because 12163859 - 2⁴ = 12163843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12163829) 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, 13097 + ... + 13994.

It is an arithmetic number, because the mean of its divisors is an integer number (3047850).

Almost surely, 2^12163859 is an apocalyptic number.

12163859 is a deficient number, since it is larger than the sum of its proper divisors (27541).

12163859 is an equidigital number, since it uses as much as digits as its factorization.

12163859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27540.

The product of its digits is 12960, while the sum is 35.

The square root of 12163859 is about 3487.6724330132. The cubic root of 12163859 is about 229.9802062361.

The spelling of 12163859 in words is "twelve million, one hundred sixty-three thousand, eight hundred fifty-nine".