3820539 has 16 divisors (see below), whose sum is σ = 5425280. Its totient is φ = 2384640.

The previous prime is 3820517. The next prime is 3820543. The reversal of 3820539 is 9350283.

It is a happy number.

It is not a de Polignac number, because 3820539 - 2²⁰ = 2771963 is a prime.

It is a Duffinian number.

3820539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3820549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5184 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (339080).

Almost surely, 2^3820539 is an apocalyptic number.

3820539 is a deficient number, since it is larger than the sum of its proper divisors (1604741).

3820539 is a wasteful number, since it uses less digits than its factorization.

3820539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 3820539 is about 1954.6199119010. The cubic root of 3820539 is about 156.3297184675.

The spelling of 3820539 in words is "three million, eight hundred twenty thousand, five hundred thirty-nine".