98209009 has 2 divisors, whose sum is σ = 98209010. Its totient is φ = 98209008.

The previous prime is 98208959. The next prime is 98209019. The reversal of 98209009 is 90090289.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72199009 + 26010000 = 8497^2 + 5100^2 .

It is a cyclic number.

It is not a de Polignac number, because 98209009 - 2¹⁹ = 97684721 is a prime.

It is not a weakly prime, because it can be changed into another prime (98209019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49104504 + 49104505.

It is an arithmetic number, because the mean of its divisors is an integer number (49104505).

Almost surely, 2^98209009 is an apocalyptic number.

It is an amenable number.

98209009 is a deficient number, since it is larger than the sum of its proper divisors (1).

98209009 is an equidigital number, since it uses as much as digits as its factorization.

98209009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 98209009 is about 9910.0458626588. The cubic root of 98209009 is about 461.3711592860.

The spelling of 98209009 in words is "ninety-eight million, two hundred nine thousand, nine".