4364221 has 4 divisors (see below), whose sum is σ = 4375612. Its totient is φ = 4352832.

The previous prime is 4364203. The next prime is 4364231. The reversal of 4364221 is 1224634.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1224634 = 2 ⋅612317.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 2595321 = 1330^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 4364221 - 2⁷ = 4364093 is a prime.

It is a Duffinian number.

4364221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4364192 and 4364201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4364201) 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 3 ways as a sum of consecutive naturals, for example, 5100 + ... + 5893.

It is an arithmetic number, because the mean of its divisors is an integer number (1093903).

Almost surely, 2^4364221 is an apocalyptic number.

It is an amenable number.

4364221 is a deficient number, since it is larger than the sum of its proper divisors (11391).

4364221 is a wasteful number, since it uses less digits than its factorization.

4364221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11390.

The product of its digits is 1152, while the sum is 22.

The square root of 4364221 is about 2089.0718034572. The cubic root of 4364221 is about 163.4188857189.

Adding to 4364221 its reverse (1224634), we get a palindrome (5588855).

The spelling of 4364221 in words is "four million, three hundred sixty-four thousand, two hundred twenty-one".