47870871 has 4 divisors (see below), whose sum is σ = 63827832. Its totient is φ = 31913912.

The previous prime is 47870857. The next prime is 47870881. The reversal of 47870871 is 17807874.

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 47870871 - 2⁵ = 47870839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47870881) 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, 7978476 + ... + 7978481.

It is an arithmetic number, because the mean of its divisors is an integer number (15956958).

Almost surely, 2^47870871 is an apocalyptic number.

47870871 is a deficient number, since it is larger than the sum of its proper divisors (15956961).

47870871 is a wasteful number, since it uses less digits than its factorization.

47870871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15956960.

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 47870871 is about 6918.8778714471. The cubic root of 47870871 is about 363.0979328841.

The spelling of 47870871 in words is "forty-seven million, eight hundred seventy thousand, eight hundred seventy-one".