390085785 has 24 divisors (see below), whose sum is σ = 678560064. Its totient is φ = 207303840.

The previous prime is 390085771. The next prime is 390085799. The reversal of 390085785 is 587580093.

It is an interprime number because it is at equal distance from previous prime (390085771) and next prime (390085799).

It is not a de Polignac number, because 390085785 - 2⁶ = 390085721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 390085785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2581 + ... + 28050.

It is an arithmetic number, because the mean of its divisors is an integer number (28273336).

Almost surely, 2^390085785 is an apocalyptic number.

It is an amenable number.

390085785 is a deficient number, since it is larger than the sum of its proper divisors (288474279).

390085785 is a wasteful number, since it uses less digits than its factorization.

390085785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30925 (or 30922 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 390085785 is about 19750.5894848736. The cubic root of 390085785 is about 730.6679224984.

The spelling of 390085785 in words is "three hundred ninety million, eighty-five thousand, seven hundred eighty-five".