390638506585 has 8 divisors (see below), whose sum is σ = 489147347520. Its totient is φ = 298923378864.

The previous prime is 390638506547. The next prime is 390638506591. The reversal of 390638506585 is 585605836093.

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 390638506585 - 2³¹ = 388491022937 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1698428175 + ... + 1698428404.

It is an arithmetic number, because the mean of its divisors is an integer number (61143418440).

Almost surely, 2^390638506585 is an apocalyptic number.

It is an amenable number.

390638506585 is a deficient number, since it is larger than the sum of its proper divisors (98508840935).

390638506585 is a wasteful number, since it uses less digits than its factorization.

390638506585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396856607.

The product of its (nonzero) digits is 23328000, while the sum is 58.

The spelling of 390638506585 in words is "three hundred ninety billion, six hundred thirty-eight million, five hundred six thousand, five hundred eighty-five".