47887911 has 6 divisors (see below), whose sum is σ = 69171440. Its totient is φ = 31925268.

The previous prime is 47887897. The next prime is 47887913. The reversal of 47887911 is 11978874.

It is a de Polignac number, because none of the positive numbers 2^k-47887911 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 (47887913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2660431 + ... + 2660448.

Almost surely, 2^47887911 is an apocalyptic number.

47887911 is a deficient number, since it is larger than the sum of its proper divisors (21283529).

47887911 is a wasteful number, since it uses less digits than its factorization.

47887911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320885 (or 5320882 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 47887911 is about 6920.1091754394. The cubic root of 47887911 is about 363.1410102620.

The spelling of 47887911 in words is "forty-seven million, eight hundred eighty-seven thousand, nine hundred eleven".