13005229 has 4 divisors (see below), whose sum is σ = 13281984. Its totient is φ = 12728476.

The previous prime is 13005227. The next prime is 13005233. The reversal of 13005229 is 92250031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92250031 = 331 ⋅278701.

It is a cyclic number.

It is not a de Polignac number, because 13005229 - 2¹ = 13005227 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005227) 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 in 3 ways as a sum of consecutive naturals, for example, 138307 + ... + 138400.

It is an arithmetic number, because the mean of its divisors is an integer number (3320496).

Almost surely, 2^13005229 is an apocalyptic number.

It is an amenable number.

13005229 is a deficient number, since it is larger than the sum of its proper divisors (276755).

13005229 is an equidigital number, since it uses as much as digits as its factorization.

13005229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276754.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13005229 is about 3606.2763343926. The cubic root of 13005229 is about 235.1649905181.

The spelling of 13005229 in words is "thirteen million, five thousand, two hundred twenty-nine".