4421623 has 8 divisors (see below), whose sum is σ = 4805120. Its totient is φ = 4053240.

The previous prime is 4421621. The next prime is 4421633. The reversal of 4421623 is 3261244.

It is a happy number.

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 4421623 - 2¹ = 4421621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4421594 and 4421603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3165 + ... + 4342.

It is an arithmetic number, because the mean of its divisors is an integer number (600640).

Almost surely, 2^4421623 is an apocalyptic number.

4421623 is a deficient number, since it is larger than the sum of its proper divisors (383497).

4421623 is a wasteful number, since it uses less digits than its factorization.

4421623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557.

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

The square root of 4421623 is about 2102.7655599234. The cubic root of 4421623 is about 164.1322426326.

Adding to 4421623 its reverse (3261244), we get a palindrome (7682867).

The spelling of 4421623 in words is "four million, four hundred twenty-one thousand, six hundred twenty-three".