4027985 has 16 divisors (see below), whose sum is σ = 5376000. Its totient is φ = 2877120.

The previous prime is 4027957. The next prime is 4027993. The reversal of 4027985 is 5897204.

It is a happy number.

It is not a de Polignac number, because 4027985 - 2¹⁰ = 4026961 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1016 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (336000).

Almost surely, 2^4027985 is an apocalyptic number.

It is an amenable number.

4027985 is a deficient number, since it is larger than the sum of its proper divisors (1348015).

4027985 is a wasteful number, since it uses less digits than its factorization.

4027985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 4027985 is about 2006.9840557414. The cubic root of 4027985 is about 159.1094403645.

The spelling of 4027985 in words is "four million, twenty-seven thousand, nine hundred eighty-five".