390785000 has 40 divisors (see below), whose sum is σ = 915620970. Its totient is φ = 156312000.

The previous prime is 390784993. The next prime is 390785033. The reversal of 390785000 is 587093.

It can be written as a sum of positive squares in 5 ways, for example, as 22221796 + 368563204 = 4714^2 + 19198^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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 9 ways as a sum of consecutive naturals, for example, 34079 + ... + 44078.

Almost surely, 2^390785000 is an apocalyptic number.

It is an amenable number.

390785000 is an abundant number, since it is smaller than the sum of its proper divisors (524835970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390785000 is an equidigital number, since it uses as much as digits as its factorization.

390785000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78183 (or 78164 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 390785000 is about 19768.2826770562. The cubic root of 390785000 is about 731.1042274015.

The spelling of 390785000 in words is "three hundred ninety million, seven hundred eighty-five thousand".