3985085655 has 16 divisors (see below), whose sum is σ = 7084596960. Its totient is φ = 2125378944.

The previous prime is 3985085641. The next prime is 3985085683. The reversal of 3985085655 is 5565805893.

3985085655 is a `hidden beast` number, since 39 + 8 + 508 + 56 + 55 = 666.

3985085655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3985085655 - 2⁸ = 3985085399 is a prime.

It is a congruent number.

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, 14759442 + ... + 14759711.

It is an arithmetic number, because the mean of its divisors is an integer number (442787310).

Almost surely, 2^3985085655 is an apocalyptic number.

3985085655 is a deficient number, since it is larger than the sum of its proper divisors (3099511305).

3985085655 is a wasteful number, since it uses less digits than its factorization.

3985085655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29519167 (or 29519161 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 54.

The square root of 3985085655 is about 63127.5348401947. The cubic root of 3985085655 is about 1585.4256742295.

The spelling of 3985085655 in words is "three billion, nine hundred eighty-five million, eighty-five thousand, six hundred fifty-five".