4221436 has 6 divisors (see below), whose sum is σ = 7387520. Its totient is φ = 2110716.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221436 is 6341224.

It is a happy number.

It is a d-powerful number, because it can be written as 4⁶ + 2³ + 2¹¹ + 1 + 4¹¹ + 3⁹ + 6⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221433) 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 as a sum of consecutive naturals, namely, 527676 + ... + 527683.

Almost surely, 2^4221436 is an apocalyptic number.

It is an amenable number.

4221436 is a deficient number, since it is larger than the sum of its proper divisors (3166084).

4221436 is a wasteful number, since it uses less digits than its factorization.

4221436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055363 (or 1055361 counting only the distinct ones).

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

The square root of 4221436 is about 2054.6133456200. The cubic root of 4221436 is about 161.6168866940.

The spelling of 4221436 in words is "four million, two hundred twenty-one thousand, four hundred thirty-six".