99848561 has 2 divisors, whose sum is σ = 99848562. Its totient is φ = 99848560.

The previous prime is 99848549. The next prime is 99848563. The reversal of 99848561 is 16584899.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 20976400 = 8881^2 + 4580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99848561 is a prime.

Together with 99848563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99848563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49924280 + 49924281.

It is an arithmetic number, because the mean of its divisors is an integer number (49924281).

Almost surely, 2^99848561 is an apocalyptic number.

It is an amenable number.

99848561 is a deficient number, since it is larger than the sum of its proper divisors (1).

99848561 is an equidigital number, since it uses as much as digits as its factorization.

99848561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 50.

The square root of 99848561 is about 9992.4251811059. The cubic root of 99848561 is about 463.9244591277.

The spelling of 99848561 in words is "ninety-nine million, eight hundred forty-eight thousand, five hundred sixty-one".