4423638 has 32 divisors (see below), whose sum is σ = 9676800. Its totient is φ = 1342080.

The previous prime is 4423619. The next prime is 4423649. The reversal of 4423638 is 8363244.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2463 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (302400).

Almost surely, 2^4423638 is an apocalyptic number.

4423638 is an abundant number, since it is smaller than the sum of its proper divisors (5253162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4423638 is a wasteful number, since it uses less digits than its factorization.

4423638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its digits is 13824, while the sum is 30.

The square root of 4423638 is about 2103.2446362704. The cubic root of 4423638 is about 164.1571713554.

The spelling of 4423638 in words is "four million, four hundred twenty-three thousand, six hundred thirty-eight".