12177923 has 4 divisors (see below), whose sum is σ = 12184920. Its totient is φ = 12170928.

The previous prime is 12177911. The next prime is 12177973. The reversal of 12177923 is 32977121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12177923 - 2⁸ = 12177667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12177923.

It is not an unprimeable number, because it can be changed into a prime (12177973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (3046230).

Almost surely, 2^12177923 is an apocalyptic number.

12177923 is a deficient number, since it is larger than the sum of its proper divisors (6997).

12177923 is an equidigital number, since it uses as much as digits as its factorization.

12177923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its digits is 5292, while the sum is 32.

The square root of 12177923 is about 3489.6880949449. The cubic root of 12177923 is about 230.0688073907.

The spelling of 12177923 in words is "twelve million, one hundred seventy-seven thousand, nine hundred twenty-three".