11516909 has 2 divisors, whose sum is σ = 11516910. Its totient is φ = 11516908.

The previous prime is 11516893. The next prime is 11516933. The reversal of 11516909 is 90961511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 3553225 = 2822^2 + 1885^2 .

It is an emirp because it is prime and its reverse (90961511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11516909 - 2⁴ = 11516893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₇₅₈₃₀₉ and since 11516909 and 758309 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11516009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758454 + 5758455.

It is an arithmetic number, because the mean of its divisors is an integer number (5758455).

Almost surely, 2^11516909 is an apocalyptic number.

It is an amenable number.

11516909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516909 is an equidigital number, since it uses as much as digits as its factorization.

11516909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 11516909 is about 3393.6571718428. The cubic root of 11516909 is about 225.8284455248.

The spelling of 11516909 in words is "eleven million, five hundred sixteen thousand, nine hundred nine".