38938439 has 2 divisors, whose sum is σ = 38938440. Its totient is φ = 38938438.

The previous prime is 38938433. The next prime is 38938441. The reversal of 38938439 is 93483983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38938439 - 2⁴ = 38938423 is a prime.

Together with 38938441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38938393 and 38938402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469219 + 19469220.

It is an arithmetic number, because the mean of its divisors is an integer number (19469220).

Almost surely, 2^38938439 is an apocalyptic number.

38938439 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938439 is an equidigital number, since it uses as much as digits as its factorization.

38938439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 38938439 is about 6240.0672272020. The cubic root of 38938439 is about 338.9426175415.

The spelling of 38938439 in words is "thirty-eight million, nine hundred thirty-eight thousand, four hundred thirty-nine".