98708509 has 2 divisors, whose sum is σ = 98708510. Its totient is φ = 98708508.

The previous prime is 98708501. The next prime is 98708527. The reversal of 98708509 is 90580789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92582884 + 6125625 = 9622^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 98708509 - 2³ = 98708501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98708501) 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, 49354254 + 49354255.

It is an arithmetic number, because the mean of its divisors is an integer number (49354255).

Almost surely, 2^98708509 is an apocalyptic number.

It is an amenable number.

98708509 is a deficient number, since it is larger than the sum of its proper divisors (1).

98708509 is an equidigital number, since it uses as much as digits as its factorization.

98708509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 98708509 is about 9935.2155990698. The cubic root of 98708509 is about 462.1520288884.

The spelling of 98708509 in words is "ninety-eight million, seven hundred eight thousand, five hundred nine".