3809221 has 8 divisors (see below), whose sum is σ = 4161024. Its totient is φ = 3465840.

The previous prime is 3809189. The next prime is 3809251. The reversal of 3809221 is 1229083.

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 3809221 - 2⁵ = 3809189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (520128).

Almost surely, 2^3809221 is an apocalyptic number.

It is an amenable number.

3809221 is a deficient number, since it is larger than the sum of its proper divisors (351803).

3809221 is a wasteful number, since it uses less digits than its factorization.

3809221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3809221 is about 1951.7225724985. The cubic root of 3809221 is about 156.1751949126.

The spelling of 3809221 in words is "three million, eight hundred nine thousand, two hundred twenty-one".