3885865 has 4 divisors (see below), whose sum is σ = 4663044. Its totient is φ = 3108688.

The previous prime is 3885859. The next prime is 3885941. The reversal of 3885865 is 5685883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1338649 + 2547216 = 1157^2 + 1596^2 .

It is a cyclic number.

It is not a de Polignac number, because 3885865 - 2⁷ = 3885737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388582 + ... + 388591.

It is an arithmetic number, because the mean of its divisors is an integer number (1165761).

Almost surely, 2^3885865 is an apocalyptic number.

It is an amenable number.

3885865 is a deficient number, since it is larger than the sum of its proper divisors (777179).

3885865 is an equidigital number, since it uses as much as digits as its factorization.

3885865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777178.

The product of its digits is 230400, while the sum is 43.

The square root of 3885865 is about 1971.2597495003. The cubic root of 3885865 is about 157.2156960632.

The spelling of 3885865 in words is "three million, eight hundred eighty-five thousand, eight hundred sixty-five".