9898547 has 2 divisors, whose sum is σ = 9898548. Its totient is φ = 9898546.

The previous prime is 9898543. The next prime is 9898571. The reversal of 9898547 is 7458989.

It is a weak prime.

It is an emirp because it is prime and its reverse (7458989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9898547 - 2² = 9898543 is a prime.

It is a super-2 number, since 2×9898547² = 195962465422418, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9898495 and 9898504.

It is not a weakly prime, because it can be changed into another prime (9898543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949273 + 4949274.

It is an arithmetic number, because the mean of its divisors is an integer number (4949274).

Almost surely, 2^9898547 is an apocalyptic number.

9898547 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898547 is an equidigital number, since it uses as much as digits as its factorization.

9898547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 9898547 is about 3146.1956391808. The cubic root of 9898547 is about 214.7124115934.

The spelling of 9898547 in words is "nine million, eight hundred ninety-eight thousand, five hundred forty-seven".