47911 has 2 divisors, whose sum is σ = 47912. Its totient is φ = 47910.

The previous prime is 47903. The next prime is 47917. The reversal of 47911 is 11974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47911 - 2³ = 47903 is a prime.

It is a Chen prime.

47911 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23955 + 23956.

It is an arithmetic number, because the mean of its divisors is an integer number (23956).

2⁴⁷⁹¹¹ is an apocalyptic number.

47911 is a deficient number, since it is larger than the sum of its proper divisors (1).

47911 is an equidigital number, since it uses as much as digits as its factorization.

47911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 47911 is about 218.8858149812. The cubic root of 47911 is about 36.3199363302.

Subtracting from 47911 its reverse (11974), we obtain a cube (35937 = 33³).

The spelling of 47911 in words is "forty-seven thousand, nine hundred eleven".