4639538 has 16 divisors (see below), whose sum is σ = 7492824. Its totient is φ = 2146560.

The previous prime is 4639529. The next prime is 4639543. The reversal of 4639538 is 8359364.

It can be written as a sum of positive squares in 4 ways, for example, as 3972049 + 667489 = 1993^2 + 817^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 956 + ... + 3192.

Almost surely, 2^4639538 is an apocalyptic number.

4639538 is a deficient number, since it is larger than the sum of its proper divisors (2853286).

4639538 is a wasteful number, since it uses less digits than its factorization.

4639538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its digits is 77760, while the sum is 38.

The square root of 4639538 is about 2153.9586811265. The cubic root of 4639538 is about 166.7854823879.

It can be divided in two parts, 463 and 9538, that added together give a palindrome (10001).

The spelling of 4639538 in words is "four million, six hundred thirty-nine thousand, five hundred thirty-eight".