47842871 has 4 divisors (see below), whose sum is σ = 47856744. Its totient is φ = 47829000.

The previous prime is 47842843. The next prime is 47842901. The reversal of 47842871 is 17824874.

It is a happy number.

47842871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 47842871 - 2⁶ = 47842807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47842801) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2696 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (11964186).

Almost surely, 2^47842871 is an apocalyptic number.

47842871 is a deficient number, since it is larger than the sum of its proper divisors (13873).

47842871 is an equidigital number, since it uses as much as digits as its factorization.

47842871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872.

The product of its digits is 100352, while the sum is 41.

The square root of 47842871 is about 6916.8541259737. The cubic root of 47842871 is about 363.0271262554.

The spelling of 47842871 in words is "forty-seven million, eight hundred forty-two thousand, eight hundred seventy-one".