11115389 has 2 divisors, whose sum is σ = 11115390. Its totient is φ = 11115388.

The previous prime is 11115373. The next prime is 11115397. The reversal of 11115389 is 98351111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9872164 + 1243225 = 3142^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115389 - 2⁴ = 11115373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11115989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557694 + 5557695.

It is an arithmetic number, because the mean of its divisors is an integer number (5557695).

Almost surely, 2^11115389 is an apocalyptic number.

It is an amenable number.

11115389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115389 is an equidigital number, since it uses as much as digits as its factorization.

11115389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 29.

The square root of 11115389 is about 3333.9749549149. The cubic root of 11115389 is about 223.1729506174.

The spelling of 11115389 in words is "eleven million, one hundred fifteen thousand, three hundred eighty-nine".