9999071 has 2 divisors, whose sum is σ = 9999072. Its totient is φ = 9999070.

The previous prime is 9999053. The next prime is 9999083. The reversal of 9999071 is 1709999.

It is a strong prime.

It is an emirp because it is prime and its reverse (1709999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999071 - 2¹⁸ = 9736927 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999271) 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, 4999535 + 4999536.

It is an arithmetic number, because the mean of its divisors is an integer number (4999536).

Almost surely, 2^9999071 is an apocalyptic number.

9999071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999071 is an equidigital number, since it uses as much as digits as its factorization.

9999071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 9999071 is about 3162.1307689594. The cubic root of 9999071 is about 215.4367972305.

The spelling of 9999071 in words is "nine million, nine hundred ninety-nine thousand, seventy-one".