9971711 has 2 divisors, whose sum is σ = 9971712. Its totient is φ = 9971710.

The previous prime is 9971699. The next prime is 9971729. The reversal of 9971711 is 1171799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9971711 - 2²² = 5777407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9971761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985855 + 4985856.

It is an arithmetic number, because the mean of its divisors is an integer number (4985856).

Almost surely, 2^9971711 is an apocalyptic number.

9971711 is a deficient number, since it is larger than the sum of its proper divisors (1).

9971711 is an equidigital number, since it uses as much as digits as its factorization.

9971711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3969, while the sum is 35.

The square root of 9971711 is about 3157.8016087145. The cubic root of 9971711 is about 215.2401211224.

The spelling of 9971711 in words is "nine million, nine hundred seventy-one thousand, seven hundred eleven".