12127769 has 2 divisors, whose sum is σ = 12127770. Its totient is φ = 12127768.

The previous prime is 12127751. The next prime is 12127793. The reversal of 12127769 is 96772121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 3948169 = 2860^2 + 1987^2 .

It is an emirp because it is prime and its reverse (96772121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12127769 - 2¹² = 12123673 is a prime.

It is a super-2 number, since 2×12127769² = 294165561834722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12127799) 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 as a sum of consecutive naturals, namely, 6063884 + 6063885.

It is an arithmetic number, because the mean of its divisors is an integer number (6063885).

Almost surely, 2^12127769 is an apocalyptic number.

It is an amenable number.

12127769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12127769 is an equidigital number, since it uses as much as digits as its factorization.

12127769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 12127769 is about 3482.4946518265. The cubic root of 12127769 is about 229.7525315635.

The spelling of 12127769 in words is "twelve million, one hundred twenty-seven thousand, seven hundred sixty-nine".