13223939 has 4 divisors (see below), whose sum is σ = 13234656. Its totient is φ = 13213224.

The previous prime is 13223933. The next prime is 13223941. The reversal of 13223939 is 93932231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13223939 - 2⁴ = 13223923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3224 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (3308664).

Almost surely, 2^13223939 is an apocalyptic number.

13223939 is a deficient number, since it is larger than the sum of its proper divisors (10717).

13223939 is an equidigital number, since it uses as much as digits as its factorization.

13223939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10716.

The product of its digits is 8748, while the sum is 32.

The square root of 13223939 is about 3636.4734290243. The cubic root of 13223939 is about 236.4759319774.

The spelling of 13223939 in words is "thirteen million, two hundred twenty-three thousand, nine hundred thirty-nine".