12189377 has 4 divisors (see below), whose sum is σ = 12371376. Its totient is φ = 12007380.

The previous prime is 12189371. The next prime is 12189439. The reversal of 12189377 is 77398121.

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: 77398121 = 1951 ⋅39671.

It is a cyclic number.

It is not a de Polignac number, because 12189377 - 2¹⁸ = 11927233 is a prime.

It is a super-3 number, since 3×12189377³ (a number of 22 digits) contains 333 as substring.

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 12189377.

It is not an unprimeable number, because it can be changed into a prime (12189371) 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, 90899 + ... + 91032.

It is an arithmetic number, because the mean of its divisors is an integer number (3092844).

Almost surely, 2^12189377 is an apocalyptic number.

It is an amenable number.

12189377 is a deficient number, since it is larger than the sum of its proper divisors (181999).

12189377 is an equidigital number, since it uses as much as digits as its factorization.

12189377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181998.

The product of its digits is 21168, while the sum is 38.

The square root of 12189377 is about 3491.3288301161. The cubic root of 12189377 is about 230.1409155371.

It can be divided in two parts, 121 and 89377, that added together give a palindrome (89498).

The spelling of 12189377 in words is "twelve million, one hundred eighty-nine thousand, three hundred seventy-seven".