4224621 has 8 divisors (see below), whose sum is σ = 5764000. Its totient is φ = 2750832.

The previous prime is 4224613. The next prime is 4224629. The reversal of 4224621 is 1264224.

It is an interprime number because it is at equal distance from previous prime (4224613) and next prime (4224629).

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

It is not a de Polignac number, because 4224621 - 2³ = 4224613 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224629) 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, 16246 + ... + 16503.

It is an arithmetic number, because the mean of its divisors is an integer number (720500).

Almost surely, 2^4224621 is an apocalyptic number.

It is an amenable number.

4224621 is a deficient number, since it is larger than the sum of its proper divisors (1539379).

4224621 is a wasteful number, since it uses less digits than its factorization.

4224621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32795.

The product of its digits is 768, while the sum is 21.

The square root of 4224621 is about 2055.3882844854. The cubic root of 4224621 is about 161.6575221856.

Adding to 4224621 its reverse (1264224), we get a palindrome (5488845).

The spelling of 4224621 in words is "four million, two hundred twenty-four thousand, six hundred twenty-one".