47839971 has 8 divisors (see below), whose sum is σ = 64209664. Its totient is φ = 31681800.

The previous prime is 47839949. The next prime is 47839997. The reversal of 47839971 is 17993874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47839971 - 2⁹ = 47839459 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 47839971.

It is not an unprimeable number, because it can be changed into a prime (47839271) 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 7 ways as a sum of consecutive naturals, for example, 52351 + ... + 53256.

It is an arithmetic number, because the mean of its divisors is an integer number (8026208).

Almost surely, 2^47839971 is an apocalyptic number.

47839971 is a deficient number, since it is larger than the sum of its proper divisors (16369693).

47839971 is a wasteful number, since it uses less digits than its factorization.

47839971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105761.

The product of its digits is 381024, while the sum is 48.

The square root of 47839971 is about 6916.6444899243. The cubic root of 47839971 is about 363.0197911331.

The spelling of 47839971 in words is "forty-seven million, eight hundred thirty-nine thousand, nine hundred seventy-one".