47384891 has 2 divisors, whose sum is σ = 47384892. Its totient is φ = 47384890.

The previous prime is 47384867. The next prime is 47384921. The reversal of 47384891 is 19848374.

47384891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47384891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47384191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23692445 + 23692446.

It is an arithmetic number, because the mean of its divisors is an integer number (23692446).

Almost surely, 2^47384891 is an apocalyptic number.

47384891 is a deficient number, since it is larger than the sum of its proper divisors (1).

47384891 is an equidigital number, since it uses as much as digits as its factorization.

47384891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 47384891 is about 6883.6684260647. The cubic root of 47384891 is about 361.8650408058.

The spelling of 47384891 in words is "forty-seven million, three hundred eighty-four thousand, eight hundred ninety-one".