3821609 has 8 divisors (see below), whose sum is σ = 4210752. Its totient is φ = 3439440.

The previous prime is 3821581. The next prime is 3821627. The reversal of 3821609 is 9061283.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3821609 - 2¹⁶ = 3756073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3821639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554 + ... + 2819.

It is an arithmetic number, because the mean of its divisors is an integer number (526344).

Almost surely, 2^3821609 is an apocalyptic number.

It is an amenable number.

3821609 is a deficient number, since it is larger than the sum of its proper divisors (389143).

3821609 is a wasteful number, since it uses less digits than its factorization.

3821609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3821609 is about 1954.8936032429. The cubic root of 3821609 is about 156.3443112763.

It can be divided in two parts, 382 and 1609, that added together give a palindrome (1991).

The spelling of 3821609 in words is "three million, eight hundred twenty-one thousand, six hundred nine".