13223209 has 4 divisors (see below), whose sum is σ = 13318480. Its totient is φ = 13127940.

The previous prime is 13223201. The next prime is 13223213. The reversal of 13223209 is 90232231.

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: 90232231 = 4153 ⋅21727.

It is a cyclic number.

It is not a de Polignac number, because 13223209 - 2³ = 13223201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13223209.

It is not an unprimeable number, because it can be changed into a prime (13223201) 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 in 3 ways as a sum of consecutive naturals, for example, 47427 + ... + 47704.

It is an arithmetic number, because the mean of its divisors is an integer number (3329620).

Almost surely, 2^13223209 is an apocalyptic number.

It is an amenable number.

13223209 is a deficient number, since it is larger than the sum of its proper divisors (95271).

13223209 is an equidigital number, since it uses as much as digits as its factorization.

13223209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95270.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13223209 is about 3636.3730556696. The cubic root of 13223209 is about 236.4715805102.

The spelling of 13223209 in words is "thirteen million, two hundred twenty-three thousand, two hundred nine".