4308221 has 4 divisors (see below), whose sum is σ = 4342272. Its totient is φ = 4274172.

The previous prime is 4308217. The next prime is 4308251. The reversal of 4308221 is 1228034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4308221 - 2² = 4308217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4308193 and 4308202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4308251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16835 + ... + 17088.

It is an arithmetic number, because the mean of its divisors is an integer number (1085568).

Almost surely, 2^4308221 is an apocalyptic number.

It is an amenable number.

4308221 is a deficient number, since it is larger than the sum of its proper divisors (34051).

4308221 is a wasteful number, since it uses less digits than its factorization.

4308221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34050.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4308221 is about 2075.6254479072. The cubic root of 4308221 is about 162.7168985294.

The spelling of 4308221 in words is "four million, three hundred eight thousand, two hundred twenty-one".