4947838 has 16 divisors (see below), whose sum is σ = 8680320. Its totient is φ = 2070936.

The previous prime is 4947821. The next prime is 4947841. The reversal of 4947838 is 8387494.

It is a super-2 number, since 2×4947838² = 48962201748488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 = 4947794 and 4947803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508 + ... + 4711.

It is an arithmetic number, because the mean of its divisors is an integer number (542520).

Almost surely, 2^4947838 is an apocalyptic number.

4947838 is a deficient number, since it is larger than the sum of its proper divisors (3732482).

4947838 is a wasteful number, since it uses less digits than its factorization.

4947838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271.

The product of its digits is 193536, while the sum is 43.

The square root of 4947838 is about 2224.3736196961. The cubic root of 4947838 is about 170.4008763281.

The spelling of 4947838 in words is "four million, nine hundred forty-seven thousand, eight hundred thirty-eight".