38390986 has 8 divisors (see below), whose sum is σ = 58280544. Its totient is φ = 18964140.

The previous prime is 38390977. The next prime is 38390987. The reversal of 38390986 is 68909383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38390987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115470 + ... + 115801.

It is an arithmetic number, because the mean of its divisors is an integer number (7285068).

Almost surely, 2^38390986 is an apocalyptic number.

38390986 is a deficient number, since it is larger than the sum of its proper divisors (19889558).

38390986 is a wasteful number, since it uses less digits than its factorization.

38390986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231356.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 38390986 is about 6196.0459972470. The cubic root of 38390986 is about 337.3466657839.

The spelling of 38390986 in words is "thirty-eight million, three hundred ninety thousand, nine hundred eighty-six".