4221549 has 12 divisors (see below), whose sum is σ = 6294912. Its totient is φ = 2723400.

The previous prime is 4221541. The next prime is 4221551. The reversal of 4221549 is 9451224.

It is not a de Polignac number, because 4221549 - 2³ = 4221541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221541) 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, 7287 + ... + 7844.

It is an arithmetic number, because the mean of its divisors is an integer number (524576).

Almost surely, 2^4221549 is an apocalyptic number.

It is an amenable number.

4221549 is a deficient number, since it is larger than the sum of its proper divisors (2073363).

4221549 is a wasteful number, since it uses less digits than its factorization.

4221549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15168 (or 15165 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 4221549 is about 2054.6408445273. The cubic root of 4221549 is about 161.6183287424.

The spelling of 4221549 in words is "four million, two hundred twenty-one thousand, five hundred forty-nine".