4223623 has 4 divisors (see below), whose sum is σ = 4303368. Its totient is φ = 4143880.

The previous prime is 4223617. The next prime is 4223627. The reversal of 4223623 is 3263224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4223623 is a prime.

It is a super-2 number, since 2×4223623² = 35677982492258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4223594 and 4223603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39793 + ... + 39898.

It is an arithmetic number, because the mean of its divisors is an integer number (1075842).

Almost surely, 2^4223623 is an apocalyptic number.

4223623 is a deficient number, since it is larger than the sum of its proper divisors (79745).

4223623 is an equidigital number, since it uses as much as digits as its factorization.

4223623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79744.

The product of its digits is 1728, while the sum is 22.

The square root of 4223623 is about 2055.1454936330. The cubic root of 4223623 is about 161.6447915041.

Adding to 4223623 its reverse (3263224), we get a palindrome (7486847).

The spelling of 4223623 in words is "four million, two hundred twenty-three thousand, six hundred twenty-three".