9987071 has 2 divisors, whose sum is σ = 9987072. Its totient is φ = 9987070.

The previous prime is 9987031. The next prime is 9987091. The reversal of 9987071 is 1707899.

It is a strong prime.

It is an emirp because it is prime and its reverse (1707899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9987071 - 2¹⁸ = 9724927 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 (9987001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993535 + 4993536.

It is an arithmetic number, because the mean of its divisors is an integer number (4993536).

Almost surely, 2^9987071 is an apocalyptic number.

9987071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987071 is an equidigital number, since it uses as much as digits as its factorization.

9987071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9987071 is about 3160.2327445933. The cubic root of 9987071 is about 215.3505800059.

The spelling of 9987071 in words is "nine million, nine hundred eighty-seven thousand, seventy-one".