4023865 has 16 divisors (see below), whose sum is σ = 4999680. Its totient is φ = 3107520.

The previous prime is 4023853. The next prime is 4023871. The reversal of 4023865 is 5683204.

It is not a de Polignac number, because 4023865 - 2⁷ = 4023737 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, 24012 + ... + 24178.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^4023865 is an apocalyptic number.

It is an amenable number.

4023865 is a deficient number, since it is larger than the sum of its proper divisors (975815).

4023865 is a wasteful number, since it uses less digits than its factorization.

4023865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4023865 is about 2005.9573774136. The cubic root of 4023865 is about 159.0551738166.

The spelling of 4023865 in words is "four million, twenty-three thousand, eight hundred sixty-five".