99914561 has 2 divisors, whose sum is σ = 99914562. Its totient is φ = 99914560.

The previous prime is 99914557. The next prime is 99914569. The reversal of 99914561 is 16541999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96904336 + 3010225 = 9844^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 99914561 - 2² = 99914557 is a prime.

It is not a weakly prime, because it can be changed into another prime (99914569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49957280 + 49957281.

It is an arithmetic number, because the mean of its divisors is an integer number (49957281).

Almost surely, 2^99914561 is an apocalyptic number.

It is an amenable number.

99914561 is a deficient number, since it is larger than the sum of its proper divisors (1).

99914561 is an equidigital number, since it uses as much as digits as its factorization.

99914561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 99914561 is about 9995.7271371321. The cubic root of 99914561 is about 464.0266547931.

The spelling of 99914561 in words is "ninety-nine million, nine hundred fourteen thousand, five hundred sixty-one".