390006985 has 8 divisors (see below), whose sum is σ = 469232640. Its totient is φ = 311189424.

The previous prime is 390006971. The next prime is 390007049. The reversal of 390006985 is 589600093.

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 390006985 - 2⁷ = 390006857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99915 + ... + 103744.

It is an arithmetic number, because the mean of its divisors is an integer number (58654080).

Almost surely, 2^390006985 is an apocalyptic number.

It is an amenable number.

390006985 is a deficient number, since it is larger than the sum of its proper divisors (79225655).

390006985 is a wasteful number, since it uses less digits than its factorization.

390006985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204047.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 390006985 is about 19748.5945069516. The cubic root of 390006985 is about 730.6187192104.

The spelling of 390006985 in words is "three hundred ninety million, six thousand, nine hundred eighty-five".