11838389 has 2 divisors, whose sum is σ = 11838390. Its totient is φ = 11838388.

The previous prime is 11838383. The next prime is 11838391. The reversal of 11838389 is 98383811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 52900 = 3433^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 11838389 - 2²⁰ = 10789813 is a prime.

Together with 11838391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11838383) 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, 5919194 + 5919195.

It is an arithmetic number, because the mean of its divisors is an integer number (5919195).

Almost surely, 2^11838389 is an apocalyptic number.

It is an amenable number.

11838389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11838389 is an equidigital number, since it uses as much as digits as its factorization.

11838389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 11838389 is about 3440.6960051710. The cubic root of 11838389 is about 227.9104308585.

The spelling of 11838389 in words is "eleven million, eight hundred thirty-eight thousand, three hundred eighty-nine".