3990020585 has 16 divisors (see below), whose sum is σ = 4892832000. Its totient is φ = 3122226816.

The previous prime is 3990020569. The next prime is 3990020591. The reversal of 3990020585 is 5850200993.

It is a cyclic number.

It is not a de Polignac number, because 3990020585 - 2⁴ = 3990020569 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489221 + ... + 497309.

It is an arithmetic number, because the mean of its divisors is an integer number (305802000).

Almost surely, 2^3990020585 is an apocalyptic number.

It is an amenable number.

3990020585 is a deficient number, since it is larger than the sum of its proper divisors (902811415).

3990020585 is a wasteful number, since it uses less digits than its factorization.

3990020585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 3990020585 is about 63166.6097317246. The cubic root of 3990020585 is about 1586.0798414602.

The spelling of 3990020585 in words is "three billion, nine hundred ninety million, twenty thousand, five hundred eighty-five".