947911 has 2 divisors, whose sum is σ = 947912. Its totient is φ = 947910.

The previous prime is 947893. The next prime is 947917. The reversal of 947911 is 119749.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 947911 - 2⁷ = 947783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947917) 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, 473955 + 473956.

It is an arithmetic number, because the mean of its divisors is an integer number (473956).

2⁹⁴⁷⁹¹¹ is an apocalyptic number.

947911 is a deficient number, since it is larger than the sum of its proper divisors (1).

947911 is an equidigital number, since it uses as much as digits as its factorization.

947911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 31.

The square root of 947911 is about 973.6072103266. The cubic root of 947911 is about 98.2326487066.

The spelling of 947911 in words is "nine hundred forty-seven thousand, nine hundred eleven".