99830609 has 2 divisors, whose sum is σ = 99830610.
Its totient is φ = 99830608.
The previous prime is 99830573. The next prime is 99830651. The reversal of 99830609 is 90603899.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 86118400 + 13712209 = 9280^2 + 3703^2
It is a cyclic number.
It is not a de Polignac number, because 99830609 - 224 = 83053393 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 99830609.
It is not a weakly prime, because it can be changed into another prime (99830659) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49915304 + 49915305.
It is an arithmetic number, because the mean of its divisors is an integer number (49915305).
Almost surely, 299830609 is an apocalyptic number.
It is an amenable number.
99830609 is a deficient number, since it is larger than the sum of its proper divisors (1).
99830609 is an equidigital number, since it uses as much as digits as its factorization.
99830609 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 104976, while the sum is 44.
The square root of 99830609 is about 9991.5268602952.
The cubic root of 99830609 is about 463.8966541165.
The spelling of 99830609 in words is "ninety-nine million, eight hundred thirty thousand, six hundred nine".