13223879 has 2 divisors, whose sum is σ = 13223880. Its totient is φ = 13223878.

The previous prime is 13223863. The next prime is 13223893. The reversal of 13223879 is 97832231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13223879 - 2⁴ = 13223863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13223179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611939 + 6611940.

It is an arithmetic number, because the mean of its divisors is an integer number (6611940).

Almost surely, 2^13223879 is an apocalyptic number.

13223879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223879 is an equidigital number, since it uses as much as digits as its factorization.

13223879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 13223879 is about 3636.4651792641. The cubic root of 13223879 is about 236.4755743286.

The spelling of 13223879 in words is "thirteen million, two hundred twenty-three thousand, eight hundred seventy-nine".