38939863 has 2 divisors, whose sum is σ = 38939864. Its totient is φ = 38939862.

The previous prime is 38939827. The next prime is 38939867. The reversal of 38939863 is 36893983.

38939863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38939863 - 2²⁵ = 5385431 is a prime.

It is a super-3 number, since 3×38939863³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38939867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469931 + 19469932.

It is an arithmetic number, because the mean of its divisors is an integer number (19469932).

Almost surely, 2^38939863 is an apocalyptic number.

38939863 is a deficient number, since it is larger than the sum of its proper divisors (1).

38939863 is an equidigital number, since it uses as much as digits as its factorization.

38939863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 38939863 is about 6240.1813274936. The cubic root of 38939863 is about 338.9467492634.

The spelling of 38939863 in words is "thirty-eight million, nine hundred thirty-nine thousand, eight hundred sixty-three".