9969571 has 2 divisors, whose sum is σ = 9969572. Its totient is φ = 9969570.

The previous prime is 9969559. The next prime is 9969577. The reversal of 9969571 is 1759699.

9969571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9969571 - 2⁹ = 9969059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9969577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984785 + 4984786.

It is an arithmetic number, because the mean of its divisors is an integer number (4984786).

Almost surely, 2^9969571 is an apocalyptic number.

9969571 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969571 is an equidigital number, since it uses as much as digits as its factorization.

9969571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 46.

The square root of 9969571 is about 3157.4627472070. The cubic root of 9969571 is about 215.2247226679.

The spelling of 9969571 in words is "nine million, nine hundred sixty-nine thousand, five hundred seventy-one".