4438638 has 24 divisors (see below), whose sum is σ = 9974328. Its totient is φ = 1479384.

The previous prime is 4438613. The next prime is 4438639. The reversal of 4438638 is 8368344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4438639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4081 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (415597).

Almost surely, 2^4438638 is an apocalyptic number.

4438638 is an abundant number, since it is smaller than the sum of its proper divisors (5535690).

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

4438638 is an equidigital number, since it uses as much as digits as its factorization.

4438638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150 (or 9138 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 4438638 is about 2106.8075374841. The cubic root of 4438638 is about 164.3425074686.

The spelling of 4438638 in words is "four million, four hundred thirty-eight thousand, six hundred thirty-eight".