98706809 has 2 divisors, whose sum is σ = 98706810. Its totient is φ = 98706808.

The previous prime is 98706791. The next prime is 98706841. The reversal of 98706809 is 90860789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86955625 + 11751184 = 9325^2 + 3428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98706809 is a prime.

It is not a weakly prime, because it can be changed into another prime (98706889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49353404 + 49353405.

It is an arithmetic number, because the mean of its divisors is an integer number (49353405).

Almost surely, 2^98706809 is an apocalyptic number.

It is an amenable number.

98706809 is a deficient number, since it is larger than the sum of its proper divisors (1).

98706809 is an equidigital number, since it uses as much as digits as its factorization.

98706809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 98706809 is about 9935.1300444433. The cubic root of 98706809 is about 462.1493757468.

The spelling of 98706809 in words is "ninety-eight million, seven hundred six thousand, eight hundred nine".