12189677 has 2 divisors, whose sum is σ = 12189678. Its totient is φ = 12189676.

The previous prime is 12189647. The next prime is 12189703. The reversal of 12189677 is 77698121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11095561 + 1094116 = 3331^2 + 1046^2 .

It is a cyclic number.

It is not a de Polignac number, because 12189677 - 2¹⁰ = 12188653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12189607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094838 + 6094839.

It is an arithmetic number, because the mean of its divisors is an integer number (6094839).

Almost surely, 2^12189677 is an apocalyptic number.

It is an amenable number.

12189677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12189677 is an equidigital number, since it uses as much as digits as its factorization.

12189677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 12189677 is about 3491.3717934359. The cubic root of 12189677 is about 230.1428035666.

It can be divided in two parts, 12189 and 677, that multiplied together give a triangular number (8251953 = T₄₀₆₂).

The spelling of 12189677 in words is "twelve million, one hundred eighty-nine thousand, six hundred seventy-seven".