11812769 has 2 divisors, whose sum is σ = 11812770. Its totient is φ = 11812768.

The previous prime is 11812733. The next prime is 11812771. The reversal of 11812769 is 96721811.

11812769 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 150544 = 3415^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 11812769 - 2⁸ = 11812513 is a prime.

It is a super-2 number, since 2×11812769² = 279083022894722, which contains 22 as substring.

Together with 11812771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11812709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5906384 + 5906385.

It is an arithmetic number, because the mean of its divisors is an integer number (5906385).

Almost surely, 2^11812769 is an apocalyptic number.

It is an amenable number.

11812769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11812769 is an equidigital number, since it uses as much as digits as its factorization.

11812769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 35.

The square root of 11812769 is about 3436.9709047357. The cubic root of 11812769 is about 227.7459016446.

The spelling of 11812769 in words is "eleven million, eight hundred twelve thousand, seven hundred sixty-nine".