4306221 has 24 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 2698080.

The previous prime is 4306199. The next prime is 4306229. The reversal of 4306221 is 1226034.

It is a happy number.

4306221 is a `hidden beast` number, since 43 + 0 + 622 + 1 = 666.

It is not a de Polignac number, because 4306221 - 2¹⁴ = 4289837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4306194 and 4306203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4306229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14551 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^4306221 is an apocalyptic number.

It is an amenable number.

4306221 is a deficient number, since it is larger than the sum of its proper divisors (2298195).

4306221 is a wasteful number, since it uses less digits than its factorization.

4306221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4306221 is about 2075.1436094883. The cubic root of 4306221 is about 162.6917153452.

The spelling of 4306221 in words is "four million, three hundred six thousand, two hundred twenty-one".