4065869 has 4 divisors (see below), whose sum is σ = 4076220. Its totient is φ = 4055520.

The previous prime is 4065857. The next prime is 4065877. The reversal of 4065869 is 9685604.

4065869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1464100 + 2601769 = 1210^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 4065869 - 2⁸ = 4065613 is a prime.

It is a super-2 number, since 2×4065869² = 33062581450322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065469) 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 3 ways as a sum of consecutive naturals, for example, 4562 + ... + 5379.

It is an arithmetic number, because the mean of its divisors is an integer number (1019055).

Almost surely, 2^4065869 is an apocalyptic number.

It is an amenable number.

4065869 is a deficient number, since it is larger than the sum of its proper divisors (10351).

4065869 is an equidigital number, since it uses as much as digits as its factorization.

4065869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10350.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 4065869 is about 2016.4000099187. The cubic root of 4065869 is about 159.6067032986.

The spelling of 4065869 in words is "four million, sixty-five thousand, eight hundred sixty-nine".