4008865 has 16 divisors (see below), whose sum is σ = 5617152. Its totient is φ = 2689344.

The previous prime is 4008853. The next prime is 4008869. The reversal of 4008865 is 5688004.

It is not a de Polignac number, because 4008865 - 2¹³ = 4000673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4008869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (351072).

Almost surely, 2^4008865 is an apocalyptic number.

It is an amenable number.

4008865 is a deficient number, since it is larger than the sum of its proper divisors (1608287).

4008865 is a wasteful number, since it uses less digits than its factorization.

4008865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 4008865 is about 2002.2150234178. The cubic root of 4008865 is about 158.8572879234.

The spelling of 4008865 in words is "four million, eight thousand, eight hundred sixty-five".