3820609 has 4 divisors (see below), whose sum is σ = 4114516. Its totient is φ = 3526704.

The previous prime is 3820603. The next prime is 3820627. The reversal of 3820609 is 9060283.

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 680625 + 3139984 = 825^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 3820609 - 2⁹ = 3820097 is a prime.

It is a Duffinian number.

3820609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3820603) 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, 146934 + ... + 146959.

It is an arithmetic number, because the mean of its divisors is an integer number (1028629).

Almost surely, 2^3820609 is an apocalyptic number.

It is an amenable number.

3820609 is a deficient number, since it is larger than the sum of its proper divisors (293907).

3820609 is a wasteful number, since it uses less digits than its factorization.

3820609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293906.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3820609 is about 1954.6378181136. The cubic root of 3820609 is about 156.3306732206.

The spelling of 3820609 in words is "three million, eight hundred twenty thousand, six hundred nine".