4638838 has 8 divisors (see below), whose sum is σ = 7146432. Its totient is φ = 2256696.

The previous prime is 4638833. The next prime is 4638857. The reversal of 4638838 is 8388364.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4638838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31270 + ... + 31417.

It is an arithmetic number, because the mean of its divisors is an integer number (893304).

Almost surely, 2^4638838 is an apocalyptic number.

4638838 is a deficient number, since it is larger than the sum of its proper divisors (2507594).

4638838 is a wasteful number, since it uses less digits than its factorization.

4638838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62726.

The product of its digits is 110592, while the sum is 40.

The square root of 4638838 is about 2153.7961834863. The cubic root of 4638838 is about 166.7770939299. Note that the first 3 decimals are identical.

It can be divided in two parts, 4638 and 838, that added together give a square (5476 = 74²).

The spelling of 4638838 in words is "four million, six hundred thirty-eight thousand, eight hundred thirty-eight".