12188923 has 4 divisors (see below), whose sum is σ = 12314680. Its totient is φ = 12063168.

The previous prime is 12188863. The next prime is 12188927. The reversal of 12188923 is 32988121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12188923 - 2⁹ = 12188411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12188927) 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, 62733 + ... + 62926.

It is an arithmetic number, because the mean of its divisors is an integer number (3078670).

Almost surely, 2^12188923 is an apocalyptic number.

12188923 is a deficient number, since it is larger than the sum of its proper divisors (125757).

12188923 is an equidigital number, since it uses as much as digits as its factorization.

12188923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125756.

The product of its digits is 6912, while the sum is 34.

The square root of 12188923 is about 3491.2638112867. The cubic root of 12188923 is about 230.1380582603.

The spelling of 12188923 in words is "twelve million, one hundred eighty-eight thousand, nine hundred twenty-three".