38866817 has 8 divisors (see below), whose sum is σ = 42477312. Its totient is φ = 35269200.

The previous prime is 38866813. The next prime is 38866819. The reversal of 38866817 is 71866883.

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

It is a cyclic number.

It is not a de Polignac number, because 38866817 - 2² = 38866813 is a prime.

It is a super-2 number, since 2×38866817² = 3021258927422978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38866813) 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, 3767 + ... + 9587.

It is an arithmetic number, because the mean of its divisors is an integer number (5309664).

Almost surely, 2^38866817 is an apocalyptic number.

It is an amenable number.

38866817 is a deficient number, since it is larger than the sum of its proper divisors (3610495).

38866817 is a wasteful number, since it uses less digits than its factorization.

38866817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439.

The product of its digits is 387072, while the sum is 47.

The square root of 38866817 is about 6234.3257053189. The cubic root of 38866817 is about 338.7346769393.

The spelling of 38866817 in words is "thirty-eight million, eight hundred sixty-six thousand, eight hundred seventeen".