11389309 has 2 divisors, whose sum is σ = 11389310. Its totient is φ = 11389308.

The previous prime is 11389297. The next prime is 11389319. The reversal of 11389309 is 90398311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7409284 + 3980025 = 2722^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 11389309 - 2⁵ = 11389277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11389319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694654 + 5694655.

It is an arithmetic number, because the mean of its divisors is an integer number (5694655).

Almost surely, 2^11389309 is an apocalyptic number.

It is an amenable number.

11389309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11389309 is an equidigital number, since it uses as much as digits as its factorization.

11389309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 11389309 is about 3374.8050314055. The cubic root of 11389309 is about 224.9913346457.

The spelling of 11389309 in words is "eleven million, three hundred eighty-nine thousand, three hundred nine".