38966866 has 8 divisors (see below), whose sum is σ = 58788684. Its totient is φ = 19370640.

The previous prime is 38966849. The next prime is 38966881. The reversal of 38966866 is 66866983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31595641 + 7371225 = 5621^2 + 2715^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55965 + ... + 56656.

Almost surely, 2^38966866 is an apocalyptic number.

38966866 is a deficient number, since it is larger than the sum of its proper divisors (19821818).

38966866 is a wasteful number, since it uses less digits than its factorization.

38966866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112796.

The product of its digits is 2239488, while the sum is 52.

The square root of 38966866 is about 6242.3445915778. The cubic root of 38966866 is about 339.0250791423.

The spelling of 38966866 in words is "thirty-eight million, nine hundred sixty-six thousand, eight hundred sixty-six".