4144638 has 16 divisors (see below), whose sum is σ = 8557056. Its totient is φ = 1336920.

The previous prime is 4144633. The next prime is 4144663. The reversal of 4144638 is 8364414.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144631) 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, 10956 + ... + 11327.

It is an arithmetic number, because the mean of its divisors is an integer number (534816).

Almost surely, 2^4144638 is an apocalyptic number.

4144638 is an abundant number, since it is smaller than the sum of its proper divisors (4412418).

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

4144638 is a wasteful number, since it uses less digits than its factorization.

4144638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22319.

The product of its digits is 9216, while the sum is 30.

The square root of 4144638 is about 2035.8384022314. The cubic root of 4144638 is about 160.6308169604.

The spelling of 4144638 in words is "four million, one hundred forty-four thousand, six hundred thirty-eight".