13400239 has 2 divisors, whose sum is σ = 13400240. Its totient is φ = 13400238.

The previous prime is 13400227. The next prime is 13400251. The reversal of 13400239 is 93200431.

13400239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (13400227) and next prime (13400251).

It is a cyclic number.

It is not a de Polignac number, because 13400239 - 2⁵ = 13400207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13400209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700119 + 6700120.

It is an arithmetic number, because the mean of its divisors is an integer number (6700120).

Almost surely, 2^13400239 is an apocalyptic number.

13400239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400239 is an equidigital number, since it uses as much as digits as its factorization.

13400239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13400239 is about 3660.6336883114. The cubic root of 13400239 is about 237.5221859238.

The spelling of 13400239 in words is "thirteen million, four hundred thousand, two hundred thirty-nine".