3833221 has 6 divisors (see below), whose sum is σ = 4459110. Its totient is φ = 3285576.

The previous prime is 3833209. The next prime is 3833233. The reversal of 3833221 is 1223383.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3833209) and next prime (3833233).

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 261121 = 1890^2 + 511^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3833221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3833192 and 3833201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3833201) 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 5 ways as a sum of consecutive naturals, for example, 39066 + ... + 39163.

It is an arithmetic number, because the mean of its divisors is an integer number (743185).

Almost surely, 2^3833221 is an apocalyptic number.

It is an amenable number.

3833221 is a deficient number, since it is larger than the sum of its proper divisors (625889).

3833221 is an equidigital number, since it uses as much as digits as its factorization.

3833221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78243 (or 78236 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 3833221 is about 1957.8613331899. The cubic root of 3833221 is about 156.5025024523.

The spelling of 3833221 in words is "three million, eight hundred thirty-three thousand, two hundred twenty-one".