98711309 has 2 divisors, whose sum is σ = 98711310. Its totient is φ = 98711308.

The previous prime is 98711279. The next prime is 98711317. The reversal of 98711309 is 90311789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98446084 + 265225 = 9922^2 + 515^2 .

It is an emirp because it is prime and its reverse (90311789) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98711309 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98711329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49355654 + 49355655.

It is an arithmetic number, because the mean of its divisors is an integer number (49355655).

Almost surely, 2^98711309 is an apocalyptic number.

It is an amenable number.

98711309 is a deficient number, since it is larger than the sum of its proper divisors (1).

98711309 is an equidigital number, since it uses as much as digits as its factorization.

98711309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 98711309 is about 9935.3565109663. The cubic root of 98711309 is about 462.1563987023.

The spelling of 98711309 in words is "ninety-eight million, seven hundred eleven thousand, three hundred nine".