99985547 has 2 divisors, whose sum is σ = 99985548. Its totient is φ = 99985546.

The previous prime is 99985489. The next prime is 99985549. The reversal of 99985547 is 74558999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99985547 - 2¹² = 99981451 is a prime.

Together with 99985549, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99985492 and 99985501.

It is not a weakly prime, because it can be changed into another prime (99985549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49992773 + 49992774.

It is an arithmetic number, because the mean of its divisors is an integer number (49992774).

Almost surely, 2^99985547 is an apocalyptic number.

99985547 is a deficient number, since it is larger than the sum of its proper divisors (1).

99985547 is an equidigital number, since it uses as much as digits as its factorization.

99985547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 56.

The square root of 99985547 is about 9999.2773238870. The cubic root of 99985547 is about 464.1365206561.

The spelling of 99985547 in words is "ninety-nine million, nine hundred eighty-five thousand, five hundred forty-seven".