12117893 has 4 divisors (see below), whose sum is σ = 12210528. Its totient is φ = 12025260.

The previous prime is 12117887. The next prime is 12117929. The reversal of 12117893 is 39871121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39871121 = 23 ⋅1733527.

It is a cyclic number.

It is not a de Polignac number, because 12117893 - 2¹² = 12113797 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 (12117823) 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, 46121 + ... + 46382.

It is an arithmetic number, because the mean of its divisors is an integer number (3052632).

Almost surely, 2^12117893 is an apocalyptic number.

It is an amenable number.

12117893 is a deficient number, since it is larger than the sum of its proper divisors (92635).

12117893 is an equidigital number, since it uses as much as digits as its factorization.

12117893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92634.

The product of its digits is 3024, while the sum is 32.

The square root of 12117893 is about 3481.0764139846. The cubic root of 12117893 is about 229.6901498730.

The spelling of 12117893 in words is "twelve million, one hundred seventeen thousand, eight hundred ninety-three".