4005885 has 16 divisors (see below), whose sum is σ = 6902784. Its totient is φ = 1972032.

The previous prime is 4005847. The next prime is 4005889. The reversal of 4005885 is 5885004.

It is not a de Polignac number, because 4005885 - 2⁶ = 4005821 is a prime.

It is a super-2 number, since 2×4005885² = 32094229266450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005889) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10077 + ... + 10466.

It is an arithmetic number, because the mean of its divisors is an integer number (431424).

Almost surely, 2^4005885 is an apocalyptic number.

It is an amenable number.

4005885 is a deficient number, since it is larger than the sum of its proper divisors (2896899).

4005885 is a wasteful number, since it uses less digits than its factorization.

4005885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20564.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 4005885 is about 2001.4707092536. The cubic root of 4005885 is about 158.8179158429.

The spelling of 4005885 in words is "four million, five thousand, eight hundred eighty-five".