4221559 has 8 divisors (see below), whose sum is σ = 4624560. Its totient is φ = 3835776.

The previous prime is 4221551. The next prime is 4221563. The reversal of 4221559 is 9551224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221559 - 2³ = 4221551 is a prime.

It is a Duffinian number.

4221559 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221551) 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 7 ways as a sum of consecutive naturals, for example, 3789 + ... + 4774.

It is an arithmetic number, because the mean of its divisors is an integer number (578070).

Almost surely, 2^4221559 is an apocalyptic number.

4221559 is a deficient number, since it is larger than the sum of its proper divisors (403001).

4221559 is a wasteful number, since it uses less digits than its factorization.

4221559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8609.

The product of its digits is 3600, while the sum is 28.

The square root of 4221559 is about 2054.6432780412. The cubic root of 4221559 is about 161.6184563561.

The spelling of 4221559 in words is "four million, two hundred twenty-one thousand, five hundred fifty-nine".