13938511 has 2 divisors, whose sum is σ = 13938512. Its totient is φ = 13938510.

The previous prime is 13938497. The next prime is 13938527. The reversal of 13938511 is 11583931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13938511 - 2⁷ = 13938383 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 (13938581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6969255 + 6969256.

It is an arithmetic number, because the mean of its divisors is an integer number (6969256).

Almost surely, 2^13938511 is an apocalyptic number.

13938511 is a deficient number, since it is larger than the sum of its proper divisors (1).

13938511 is an equidigital number, since it uses as much as digits as its factorization.

13938511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 13938511 is about 3733.4315314466. The cubic root of 13938511 is about 240.6608580058.

The spelling of 13938511 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred eleven".