47894871 has 4 divisors (see below), whose sum is σ = 63859832. Its totient is φ = 31929912.

The previous prime is 47894867. The next prime is 47894893. The reversal of 47894871 is 17849874.

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

It is not a de Polignac number, because 47894871 - 2² = 47894867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47894871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47894471) 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, 7982476 + ... + 7982481.

It is an arithmetic number, because the mean of its divisors is an integer number (15964958).

Almost surely, 2^47894871 is an apocalyptic number.

47894871 is a deficient number, since it is larger than the sum of its proper divisors (15964961).

47894871 is a wasteful number, since it uses less digits than its factorization.

47894871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15964960.

The product of its digits is 451584, while the sum is 48.

The square root of 47894871 is about 6920.6120394081. The cubic root of 47894871 is about 363.1586023080.

The spelling of 47894871 in words is "forty-seven million, eight hundred ninety-four thousand, eight hundred seventy-one".