4208638 has 16 divisors (see below), whose sum is σ = 7241184. Its totient is φ = 1797120.

The previous prime is 4208629. The next prime is 4208641. The reversal of 4208638 is 8368024.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7006 + ... + 7582.

It is an arithmetic number, because the mean of its divisors is an integer number (452574).

Almost surely, 2^4208638 is an apocalyptic number.

4208638 is a deficient number, since it is larger than the sum of its proper divisors (3032546).

4208638 is a wasteful number, since it uses less digits than its factorization.

4208638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107.

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

The square root of 4208638 is about 2051.4965269286. The cubic root of 4208638 is about 161.4533983572.

It can be divided in two parts, 42086 and 38, that added together give a palindrome (42124).

The spelling of 4208638 in words is "four million, two hundred eight thousand, six hundred thirty-eight".