4438138 has 8 divisors (see below), whose sum is σ = 6726132. Its totient is φ = 2196096.

The previous prime is 4438123. The next prime is 4438151. The reversal of 4438138 is 8318344.

It can be written as a sum of positive squares in 2 ways, for example, as 4272489 + 165649 = 2067^2 + 407^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11245 + ... + 11632.

Almost surely, 2^4438138 is an apocalyptic number.

4438138 is a deficient number, since it is larger than the sum of its proper divisors (2287994).

4438138 is a wasteful number, since it uses less digits than its factorization.

4438138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22976.

The product of its digits is 9216, while the sum is 31.

The square root of 4438138 is about 2106.6888711910. The cubic root of 4438138 is about 164.3363363309.

The spelling of 4438138 in words is "four million, four hundred thirty-eight thousand, one hundred thirty-eight".