385216988 has 24 divisors (see below), whose sum is σ = 726899712. Its totient is φ = 177568704.

The previous prime is 385216939. The next prime is 385217023. The reversal of 385216988 is 889612583.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41381 + ... + 49827.

It is an arithmetic number, because the mean of its divisors is an integer number (30287488).

Almost surely, 2^385216988 is an apocalyptic number.

It is an amenable number.

385216988 is a deficient number, since it is larger than the sum of its proper divisors (341682724).

385216988 is a wasteful number, since it uses less digits than its factorization.

385216988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341 (or 9339 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 385216988 is about 19626.9454577120. The cubic root of 385216988 is about 727.6152794571.

The spelling of 385216988 in words is "three hundred eighty-five million, two hundred sixteen thousand, nine hundred eighty-eight".