47656871 has 4 divisors (see below), whose sum is σ = 48094200. Its totient is φ = 47219544.

The previous prime is 47656867. The next prime is 47656901. The reversal of 47656871 is 17865674.

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

It is a cyclic number.

It is not a de Polignac number, because 47656871 - 2² = 47656867 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 (47656841) 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 in 3 ways as a sum of consecutive naturals, for example, 218501 + ... + 218718.

It is an arithmetic number, because the mean of its divisors is an integer number (12023550).

Almost surely, 2^47656871 is an apocalyptic number.

47656871 is a deficient number, since it is larger than the sum of its proper divisors (437329).

47656871 is a wasteful number, since it uses less digits than its factorization.

47656871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437328.

The product of its digits is 282240, while the sum is 44.

The square root of 47656871 is about 6903.3956137541. The cubic root of 47656871 is about 362.5560652087.

The spelling of 47656871 in words is "forty-seven million, six hundred fifty-six thousand, eight hundred seventy-one".