38009986 has 12 divisors (see below), whose sum is σ = 66323718. Its totient is φ = 16289952.

The previous prime is 38009941. The next prime is 38010019. The reversal of 38009986 is 68990083.

It can be written as a sum of positive squares in only one way, i.e., 36832761 + 1177225 = 6069^2 + 1085^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193831 + ... + 194026.

Almost surely, 2^38009986 is an apocalyptic number.

38009986 is a deficient number, since it is larger than the sum of its proper divisors (28313732).

38009986 is a wasteful number, since it uses less digits than its factorization.

38009986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387873 (or 387866 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 38009986 is about 6165.2239213187. The cubic root of 38009986 is about 336.2269878255.

The spelling of 38009986 in words is "thirty-eight million, nine thousand, nine hundred eighty-six".