11388389 has 2 divisors, whose sum is σ = 11388390. Its totient is φ = 11388388.

The previous prime is 11388379. The next prime is 11388413. The reversal of 11388389 is 98388311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 112225 = 3358^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 11388389 - 2¹⁶ = 11322853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11388319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694194 + 5694195.

It is an arithmetic number, because the mean of its divisors is an integer number (5694195).

Almost surely, 2^11388389 is an apocalyptic number.

It is an amenable number.

11388389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388389 is an equidigital number, since it uses as much as digits as its factorization.

11388389 is an evil number, because the sum of its binary digits is even.

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

The square root of 11388389 is about 3374.6687244824. The cubic root of 11388389 is about 224.9852764028.

The spelling of 11388389 in words is "eleven million, three hundred eighty-eight thousand, three hundred eighty-nine".