39039239 has 2 divisors, whose sum is σ = 39039240. Its totient is φ = 39039238.

The previous prime is 39039229. The next prime is 39039241. The reversal of 39039239 is 93293093.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39039239 is a prime.

It is a Sophie Germain prime.

Together with 39039241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39039229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19519619 + 19519620.

It is an arithmetic number, because the mean of its divisors is an integer number (19519620).

Almost surely, 2^39039239 is an apocalyptic number.

39039239 is a deficient number, since it is larger than the sum of its proper divisors (1).

39039239 is an equidigital number, since it uses as much as digits as its factorization.

39039239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 38.

The square root of 39039239 is about 6248.1388428875. The cubic root of 39039239 is about 339.2348392954.

The spelling of 39039239 in words is "thirty-nine million, thirty-nine thousand, two hundred thirty-nine".