11219309 has 2 divisors, whose sum is σ = 11219310. Its totient is φ = 11219308.

The previous prime is 11219293. The next prime is 11219321. The reversal of 11219309 is 90391211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11202409 + 16900 = 3347^2 + 130^2 .

It is an emirp because it is prime and its reverse (90391211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11219309 - 2⁴ = 11219293 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 (11219339) 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, 5609654 + 5609655.

It is an arithmetic number, because the mean of its divisors is an integer number (5609655).

Almost surely, 2^11219309 is an apocalyptic number.

It is an amenable number.

11219309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11219309 is an equidigital number, since it uses as much as digits as its factorization.

11219309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 11219309 is about 3349.5236974830. The cubic root of 11219309 is about 223.8662905787.

The spelling of 11219309 in words is "eleven million, two hundred nineteen thousand, three hundred nine".