9989071 has 2 divisors, whose sum is σ = 9989072. Its totient is φ = 9989070.

The previous prime is 9989059. The next prime is 9989123. The reversal of 9989071 is 1709899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9989071 - 2⁵ = 9989039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9989171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994535 + 4994536.

It is an arithmetic number, because the mean of its divisors is an integer number (4994536).

Almost surely, 2^9989071 is an apocalyptic number.

9989071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989071 is an equidigital number, since it uses as much as digits as its factorization.

9989071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 9989071 is about 3160.5491611427. The cubic root of 9989071 is about 215.3649543376.

The spelling of 9989071 in words is "nine million, nine hundred eighty-nine thousand, seventy-one".