11388229 has 2 divisors, whose sum is σ = 11388230. Its totient is φ = 11388228.

The previous prime is 11388227. The next prime is 11388257. The reversal of 11388229 is 92288311.

11388229 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 31329 = 3370^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 11388229 - 2¹ = 11388227 is a prime.

Together with 11388227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11388194 and 11388203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11388227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694114 + 5694115.

It is an arithmetic number, because the mean of its divisors is an integer number (5694115).

Almost surely, 2^11388229 is an apocalyptic number.

It is an amenable number.

11388229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388229 is an equidigital number, since it uses as much as digits as its factorization.

11388229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 11388229 is about 3374.6450183686. The cubic root of 11388229 is about 224.9842227620.

The spelling of 11388229 in words is "eleven million, three hundred eighty-eight thousand, two hundred twenty-nine".