4947638 has 8 divisors (see below), whose sum is σ = 7812120. Its totient is φ = 2343600.

The previous prime is 4947617. The next prime is 4947653. The reversal of 4947638 is 8367494.

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

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4947595 and 4947604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65063 + ... + 65138.

It is an arithmetic number, because the mean of its divisors is an integer number (976515).

Almost surely, 2^4947638 is an apocalyptic number.

4947638 is a deficient number, since it is larger than the sum of its proper divisors (2864482).

4947638 is a wasteful number, since it uses less digits than its factorization.

4947638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130222.

The product of its digits is 145152, while the sum is 41.

The square root of 4947638 is about 2224.3286627655. The cubic root of 4947638 is about 170.3985803330.

The spelling of 4947638 in words is "four million, nine hundred forty-seven thousand, six hundred thirty-eight".