3802221 has 12 divisors (see below), whose sum is σ = 5695872. Its totient is φ = 2534652.

The previous prime is 3802213. The next prime is 3802229. The reversal of 3802221 is 1222083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3802213) and next prime (3802229).

It is not a de Polignac number, because 3802221 - 2³ = 3802213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3802194 and 3802203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3802229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7581 + ... + 8066.

It is an arithmetic number, because the mean of its divisors is an integer number (474656).

Almost surely, 2^3802221 is an apocalyptic number.

It is an amenable number.

3802221 is a deficient number, since it is larger than the sum of its proper divisors (1893651).

3802221 is an equidigital number, since it uses as much as digits as its factorization.

3802221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662 (or 15650 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3802221 is about 1949.9284602262. The cubic root of 3802221 is about 156.0794713422.

It can be divided in two parts, 380 and 2221, that added together give a square (2601 = 51²).

The spelling of 3802221 in words is "three million, eight hundred two thousand, two hundred twenty-one".