11727109 has 2 divisors, whose sum is σ = 11727110. Its totient is φ = 11727108.

The previous prime is 11727103. The next prime is 11727119. The reversal of 11727109 is 90172711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 1898884 = 3135^2 + 1378^2 .

It is an emirp because it is prime and its reverse (90172711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11727109 - 2³ = 11727101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11727101) 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, 5863554 + 5863555.

It is an arithmetic number, because the mean of its divisors is an integer number (5863555).

Almost surely, 2^11727109 is an apocalyptic number.

It is an amenable number.

11727109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11727109 is an equidigital number, since it uses as much as digits as its factorization.

11727109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 11727109 is about 3424.4866768612. The cubic root of 11727109 is about 227.1940677074.

It can be divided in two parts, 1172 and 7109, that added together give a square (8281 = 91²).

The spelling of 11727109 in words is "eleven million, seven hundred twenty-seven thousand, one hundred nine".