47886891 has 16 divisors (see below), whose sum is σ = 69891360. Its totient is φ = 28984320.

The previous prime is 47886889. The next prime is 47886901. The reversal of 47886891 is 19868874.

It is not a de Polignac number, because 47886891 - 2¹ = 47886889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47886191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7686 + ... + 12443.

It is an arithmetic number, because the mean of its divisors is an integer number (4368210).

Almost surely, 2^47886891 is an apocalyptic number.

47886891 is a deficient number, since it is larger than the sum of its proper divisors (22004469).

47886891 is a wasteful number, since it uses less digits than its factorization.

47886891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20206.

The product of its digits is 774144, while the sum is 51.

The square root of 47886891 is about 6920.0354767877. The cubic root of 47886891 is about 363.1384319741.

The spelling of 47886891 in words is "forty-seven million, eight hundred eighty-six thousand, eight hundred ninety-one".