9983664547 has 2 divisors, whose sum is σ = 9983664548. Its totient is φ = 9983664546.

The previous prime is 9983664521. The next prime is 9983664553. The reversal of 9983664547 is 7454663899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9983664547 - 2¹⁹ = 9983140259 is a prime.

It is not a weakly prime, because it can be changed into another prime (9983664557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991832273 + 4991832274.

It is an arithmetic number, because the mean of its divisors is an integer number (4991832274).

Almost surely, 2^9983664547 is an apocalyptic number.

9983664547 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983664547 is an equidigital number, since it uses as much as digits as its factorization.

9983664547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 61.

The square root of 9983664547 is about 99918.2893518499. The cubic root of 9983664547 is about 2153.2609284481.

The spelling of 9983664547 in words is "nine billion, nine hundred eighty-three million, six hundred sixty-four thousand, five hundred forty-seven".