3852921 has 16 divisors (see below), whose sum is σ = 5343104. Its totient is φ = 2467584.

The previous prime is 3852917. The next prime is 3852923. The reversal of 3852921 is 1292583.

It is a happy number.

It is not a de Polignac number, because 3852921 - 2² = 3852917 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

Its product of digits (4320) is a multiple of the sum of its prime divisors (480).

3852921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3852923) 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 15 ways as a sum of consecutive naturals, for example, 11265 + ... + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (333944).

Almost surely, 2^3852921 is an apocalyptic number.

It is an amenable number.

3852921 is a deficient number, since it is larger than the sum of its proper divisors (1490183).

3852921 is a wasteful number, since it uses less digits than its factorization.

3852921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480.

The product of its digits is 4320, while the sum is 30.

The square root of 3852921 is about 1962.8858856286. The cubic root of 3852921 is about 156.7701479206.

The spelling of 3852921 in words is "three million, eight hundred fifty-two thousand, nine hundred twenty-one".