3865199 has 6 divisors (see below), whose sum is σ = 4185576. Its totient is φ = 3567720.

The previous prime is 3865187. The next prime is 3865229. The reversal of 3865199 is 9915683.

It is not a de Polignac number, because 3865199 - 2²⁰ = 2816623 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3835199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11267 + ... + 11604.

It is an arithmetic number, because the mean of its divisors is an integer number (697596).

Almost surely, 2^3865199 is an apocalyptic number.

3865199 is a deficient number, since it is larger than the sum of its proper divisors (320377).

3865199 is a wasteful number, since it uses less digits than its factorization.

3865199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22897 (or 22884 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 3865199 is about 1966.0109358801. The cubic root of 3865199 is about 156.9364964211.

The spelling of 3865199 in words is "three million, eight hundred sixty-five thousand, one hundred ninety-nine".