13223579 has 4 divisors (see below), whose sum is σ = 13270920. Its totient is φ = 13176240.

The previous prime is 13223557. The next prime is 13223593. The reversal of 13223579 is 97532231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13223579 - 2⁸ = 13223323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223549) 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, 23249 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (3317730).

Almost surely, 2^13223579 is an apocalyptic number.

13223579 is a deficient number, since it is larger than the sum of its proper divisors (47341).

13223579 is an equidigital number, since it uses as much as digits as its factorization.

13223579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47340.

The product of its digits is 11340, while the sum is 32.

The square root of 13223579 is about 3636.4239301820. The cubic root of 13223579 is about 236.4737860684.

The spelling of 13223579 in words is "thirteen million, two hundred twenty-three thousand, five hundred seventy-nine".