388785085 has 32 divisors (see below), whose sum is σ = 520168320. Its totient is φ = 277095168.

The previous prime is 388785073. The next prime is 388785091. The reversal of 388785085 is 580587883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388785085 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333714 + ... + 334876.

It is an arithmetic number, because the mean of its divisors is an integer number (16255260).

Almost surely, 2^388785085 is an apocalyptic number.

It is an amenable number.

388785085 is a deficient number, since it is larger than the sum of its proper divisors (131383235).

388785085 is a wasteful number, since it uses less digits than its factorization.

388785085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 2150400, while the sum is 52.

The square root of 388785085 is about 19717.6338590613. The cubic root of 388785085 is about 729.8549064233.

The spelling of 388785085 in words is "three hundred eighty-eight million, seven hundred eighty-five thousand, eighty-five".