3821321 has 8 divisors (see below), whose sum is σ = 4406784. Its totient is φ = 3245760.

The previous prime is 3821317. The next prime is 3821327. The reversal of 3821321 is 1231283.

3821321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3821321 - 2² = 3821317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3821293 and 3821302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821327) 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 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (550848).

Almost surely, 2^3821321 is an apocalyptic number.

It is an amenable number.

3821321 is a deficient number, since it is larger than the sum of its proper divisors (585463).

3821321 is a wasteful number, since it uses less digits than its factorization.

3821321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951.

The product of its digits is 288, while the sum is 20.

The square root of 3821321 is about 1954.8199405572. The cubic root of 3821321 is about 156.3403837602.

The spelling of 3821321 in words is "three million, eight hundred twenty-one thousand, three hundred twenty-one".