38939886 has 16 divisors (see below), whose sum is σ = 86533200. Its totient is φ = 12979944.

The previous prime is 38939867. The next prime is 38939893. The reversal of 38939886 is 68893983.

38939886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 721109 = 38939886 / (3 + 8 + 9 + 3 + 9 + 8 + 8 + 6).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 360501 + ... + 360608.

It is an arithmetic number, because the mean of its divisors is an integer number (5408325).

Almost surely, 2^38939886 is an apocalyptic number.

38939886 is an abundant number, since it is smaller than the sum of its proper divisors (47593314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38939886 is a wasteful number, since it uses less digits than its factorization.

38939886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721120 (or 721114 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 38939886 is about 6240.1831703885. The cubic root of 38939886 is about 338.9468159969.

The spelling of 38939886 in words is "thirty-eight million, nine hundred thirty-nine thousand, eight hundred eighty-six".