47818871 has 2 divisors, whose sum is σ = 47818872. Its totient is φ = 47818870.

The previous prime is 47818867. The next prime is 47818889. The reversal of 47818871 is 17881874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47818871 - 2² = 47818867 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47818861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23909435 + 23909436.

It is an arithmetic number, because the mean of its divisors is an integer number (23909436).

Almost surely, 2^47818871 is an apocalyptic number.

47818871 is a deficient number, since it is larger than the sum of its proper divisors (1).

47818871 is an equidigital number, since it uses as much as digits as its factorization.

47818871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 44.

The square root of 47818871 is about 6915.1190156063. The cubic root of 47818871 is about 362.9664128678.

The spelling of 47818871 in words is "forty-seven million, eight hundred eighteen thousand, eight hundred seventy-one".