13939529 has 2 divisors, whose sum is σ = 13939530. Its totient is φ = 13939528.

The previous prime is 13939511. The next prime is 13939547. The reversal of 13939529 is 92593931.

It is a happy number.

13939529 is digitally balanced in base 2, 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 (13939511) and next prime (13939547).

It can be written as a sum of positive squares in only one way, i.e., 7689529 + 6250000 = 2773^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 13939529 - 2⁸ = 13939273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13939729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6969764 + 6969765.

It is an arithmetic number, because the mean of its divisors is an integer number (6969765).

Almost surely, 2^13939529 is an apocalyptic number.

It is an amenable number.

13939529 is a deficient number, since it is larger than the sum of its proper divisors (1).

13939529 is an equidigital number, since it uses as much as digits as its factorization.

13939529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610, while the sum is 41.

The square root of 13939529 is about 3733.5678646571. The cubic root of 13939529 is about 240.6667167566. Note that the first 3 decimals are identical.

The spelling of 13939529 in words is "thirteen million, nine hundred thirty-nine thousand, five hundred twenty-nine".