4938638 has 4 divisors (see below), whose sum is σ = 7407960. Its totient is φ = 2469318.

The previous prime is 4938623. The next prime is 4938643. The reversal of 4938638 is 8368394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8368394 = 2 ⋅4184197.

It is a junction number, because it is equal to n+sod(n) for n = 4938595 and 4938604.

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 as a sum of consecutive naturals, namely, 1234658 + ... + 1234661.

It is an arithmetic number, because the mean of its divisors is an integer number (1851990).

Almost surely, 2^4938638 is an apocalyptic number.

4938638 is a deficient number, since it is larger than the sum of its proper divisors (2469322).

4938638 is a wasteful number, since it uses less digits than its factorization.

4938638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469321.

The product of its digits is 124416, while the sum is 41.

The square root of 4938638 is about 2222.3046595820. The cubic root of 4938638 is about 170.2951964521.

The spelling of 4938638 in words is "four million, nine hundred thirty-eight thousand, six hundred thirty-eight".