11538229 has 2 divisors, whose sum is σ = 11538230. Its totient is φ = 11538228.

The previous prime is 11538221. The next prime is 11538239. The reversal of 11538229 is 92283511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10227204 + 1311025 = 3198^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 11538229 - 2³ = 11538221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11538229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11538221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769114 + 5769115.

It is an arithmetic number, because the mean of its divisors is an integer number (5769115).

Almost surely, 2^11538229 is an apocalyptic number.

It is an amenable number.

11538229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11538229 is an equidigital number, since it uses as much as digits as its factorization.

11538229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 11538229 is about 3396.7968735266. The cubic root of 11538229 is about 225.9677101648.

The spelling of 11538229 in words is "eleven million, five hundred thirty-eight thousand, two hundred twenty-nine".