4638444 has 12 divisors (see below), whose sum is σ = 10823064. Its totient is φ = 1546144.

The previous prime is 4638419. The next prime is 4638449. The reversal of 4638444 is 4448364.

4638444 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4638444² = 43030325482272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4638449) 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, 193257 + ... + 193280.

It is an arithmetic number, because the mean of its divisors is an integer number (901922).

Almost surely, 2^4638444 is an apocalyptic number.

It is an amenable number.

4638444 is an abundant number, since it is smaller than the sum of its proper divisors (6184620).

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

4638444 is a wasteful number, since it uses less digits than its factorization.

4638444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386544 (or 386542 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 4638444 is about 2153.7047151362. The cubic root of 4638444 is about 166.7723720552.

The spelling of 4638444 in words is "four million, six hundred thirty-eight thousand, four hundred forty-four".