3865223 has 4 divisors (see below), whose sum is σ = 3869928. Its totient is φ = 3860520.

The previous prime is 3865187. The next prime is 3865229. The reversal of 3865223 is 3225683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3225683 = 1433 ⋅2251.

It is a cyclic number.

It is not a de Polignac number, because 3865223 - 2¹⁸ = 3603079 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 8⁶ + 6⁷ + 5² + 2²⁰ + 2²¹ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761 + ... + 2882.

It is an arithmetic number, because the mean of its divisors is an integer number (967482).

Almost surely, 2^3865223 is an apocalyptic number.

3865223 is a deficient number, since it is larger than the sum of its proper divisors (4705).

3865223 is a wasteful number, since it uses less digits than its factorization.

3865223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704.

The product of its digits is 8640, while the sum is 29.

The square root of 3865223 is about 1966.0170396006. The cubic root of 3865223 is about 156.9368212399.

Subtracting from 3865223 its product of digits (8640), we obtain a palindrome (3856583).

The spelling of 3865223 in words is "three million, eight hundred sixty-five thousand, two hundred twenty-three".