3829221 has 16 divisors (see below), whose sum is σ = 6189120. Its totient is φ = 2320560.

The previous prime is 3829219. The next prime is 3829223. The reversal of 3829221 is 1229283.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3829219) and next prime (3829223).

It is not a de Polignac number, because 3829221 - 2¹ = 3829219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3829223) 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, 6150 + ... + 6743.

It is an arithmetic number, because the mean of its divisors is an integer number (386820).

Almost surely, 2^3829221 is an apocalyptic number.

It is an amenable number.

3829221 is a deficient number, since it is larger than the sum of its proper divisors (2359899).

3829221 is a wasteful number, since it uses less digits than its factorization.

3829221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913 (or 12907 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 3829221 is about 1956.8395437542. The cubic root of 3829221 is about 156.4480462578.

The spelling of 3829221 in words is "three million, eight hundred twenty-nine thousand, two hundred twenty-one".