11709109 has 2 divisors, whose sum is σ = 11709110. Its totient is φ = 11709108.

The previous prime is 11709101. The next prime is 11709119. The reversal of 11709109 is 90190711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9474084 + 2235025 = 3078^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 11709109 - 2³ = 11709101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11709101) 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, 5854554 + 5854555.

It is an arithmetic number, because the mean of its divisors is an integer number (5854555).

Almost surely, 2^11709109 is an apocalyptic number.

It is an amenable number.

11709109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11709109 is an equidigital number, since it uses as much as digits as its factorization.

11709109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 11709109 is about 3421.8575364851. The cubic root of 11709109 is about 227.0777677357.

The spelling of 11709109 in words is "eleven million, seven hundred nine thousand, one hundred nine".