38816985 has 32 divisors (see below), whose sum is σ = 65940480. Its totient is φ = 19456448.

The previous prime is 38816977. The next prime is 38817007. The reversal of 38816985 is 58961883.

It is a cyclic number.

It is not a de Polignac number, because 38816985 - 2³ = 38816977 is a prime.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 19402 + ... + 21308.

It is an arithmetic number, because the mean of its divisors is an integer number (2060640).

Almost surely, 2^38816985 is an apocalyptic number.

It is an amenable number.

38816985 is a deficient number, since it is larger than the sum of its proper divisors (27123495).

38816985 is a wasteful number, since it uses less digits than its factorization.

38816985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its digits is 414720, while the sum is 48.

The square root of 38816985 is about 6230.3278404912. The cubic root of 38816985 is about 338.5898486353.

The spelling of 38816985 in words is "thirty-eight million, eight hundred sixteen thousand, nine hundred eighty-five".