3865090 has 16 divisors (see below), whose sum is σ = 7076160. Its totient is φ = 1519600.

The previous prime is 3865079. The next prime is 3865093. The reversal of 3865090 is 905683.

3865090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3865093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2686 + ... + 3865.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

Almost surely, 2^3865090 is an apocalyptic number.

3865090 is a deficient number, since it is larger than the sum of its proper divisors (3211070).

3865090 is a wasteful number, since it uses less digits than its factorization.

3865090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 3865090 is about 1965.9832145774. The cubic root of 3865090 is about 156.9350211854.

It can be divided in two parts, 386 and 5090, that added together give a square (5476 = 74²).

The spelling of 3865090 in words is "three million, eight hundred sixty-five thousand, ninety".