13823539 has 2 divisors, whose sum is σ = 13823540. Its totient is φ = 13823538.

The previous prime is 13823531. The next prime is 13823549. The reversal of 13823539 is 93532831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13823539 - 2³ = 13823531 is a prime.

It is not a weakly prime, because it can be changed into another prime (13823531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6911769 + 6911770.

It is an arithmetic number, because the mean of its divisors is an integer number (6911770).

Almost surely, 2^13823539 is an apocalyptic number.

13823539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13823539 is an equidigital number, since it uses as much as digits as its factorization.

13823539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 13823539 is about 3718.0020172130. The cubic root of 13823539 is about 239.9973321463.

The spelling of 13823539 in words is "thirteen million, eight hundred twenty-three thousand, five hundred thirty-nine".