13213829 has 2 divisors, whose sum is σ = 13213830. Its totient is φ = 13213828.

The previous prime is 13213769. The next prime is 13213831. The reversal of 13213829 is 92831231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 2553604 = 3265^2 + 1598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13213829 is a prime.

It is a Sophie Germain prime.

Together with 13213831, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13213129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606914 + 6606915.

It is an arithmetic number, because the mean of its divisors is an integer number (6606915).

Almost surely, 2^13213829 is an apocalyptic number.

It is an amenable number.

13213829 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213829 is an equidigital number, since it uses as much as digits as its factorization.

13213829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 13213829 is about 3635.0830802060. The cubic root of 13213829 is about 236.4156528831.

The spelling of 13213829 in words is "thirteen million, two hundred thirteen thousand, eight hundred twenty-nine".