4947871 has 2 divisors, whose sum is σ = 4947872. Its totient is φ = 4947870.

The previous prime is 4947863. The next prime is 4947949. The reversal of 4947871 is 1787494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4947871 - 2³ = 4947863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4947821) by changing a digit.

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 as a sum of consecutive naturals, namely, 2473935 + 2473936.

It is an arithmetic number, because the mean of its divisors is an integer number (2473936).

Almost surely, 2^4947871 is an apocalyptic number.

4947871 is a deficient number, since it is larger than the sum of its proper divisors (1).

4947871 is an equidigital number, since it uses as much as digits as its factorization.

4947871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 4947871 is about 2224.3810375023. The cubic root of 4947871 is about 170.4012551613.

The spelling of 4947871 in words is "four million, nine hundred forty-seven thousand, eight hundred seventy-one".