38938666 has 16 divisors (see below), whose sum is σ = 64931328. Its totient is φ = 17391600.

The previous prime is 38938663. The next prime is 38938681. The reversal of 38938666 is 66683983.

It is not an unprimeable number, because it can be changed into a prime (38938661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23350 + ... + 24961.

It is an arithmetic number, because the mean of its divisors is an integer number (4058208).

Almost surely, 2^38938666 is an apocalyptic number.

38938666 is a deficient number, since it is larger than the sum of its proper divisors (25992662).

38938666 is a wasteful number, since it uses less digits than its factorization.

38938666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48357.

The product of its digits is 1119744, while the sum is 49.

The square root of 38938666 is about 6240.0854160821. The cubic root of 38938666 is about 338.9432761865.

The spelling of 38938666 in words is "thirty-eight million, nine hundred thirty-eight thousand, six hundred sixty-six".