4947847 has 4 divisors (see below), whose sum is σ = 5208280. Its totient is φ = 4687416.

The previous prime is 4947841. The next prime is 4947853. The reversal of 4947847 is 7487494.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4947841) and next prime (4947853).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4947847 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 9⁷ + 4⁸ + 7 + 8⁵ + 4⁸ + 7 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4947841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130188 + ... + 130225.

It is an arithmetic number, because the mean of its divisors is an integer number (1302070).

Almost surely, 2^4947847 is an apocalyptic number.

4947847 is a deficient number, since it is larger than the sum of its proper divisors (260433).

4947847 is a wasteful number, since it uses less digits than its factorization.

4947847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260432.

The product of its digits is 225792, while the sum is 43.

The square root of 4947847 is about 2224.3756427366. The cubic root of 4947847 is about 170.4009796464.

The spelling of 4947847 in words is "four million, nine hundred forty-seven thousand, eight hundred forty-seven".