11308909 has 2 divisors, whose sum is σ = 11308910. Its totient is φ = 11308908.

The previous prime is 11308903. The next prime is 11308991. The reversal of 11308909 is 90980311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9320809 + 1988100 = 3053^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 11308909 - 2⁵ = 11308877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11308903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5654454 + 5654455.

It is an arithmetic number, because the mean of its divisors is an integer number (5654455).

Almost surely, 2^11308909 is an apocalyptic number.

It is an amenable number.

11308909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11308909 is an equidigital number, since it uses as much as digits as its factorization.

11308909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 11308909 is about 3362.8721355413. The cubic root of 11308909 is about 224.4606604647.

The spelling of 11308909 in words is "eleven million, three hundred eight thousand, nine hundred nine".