98668309 has 2 divisors, whose sum is σ = 98668310. Its totient is φ = 98668308.

The previous prime is 98668267. The next prime is 98668313. The reversal of 98668309 is 90386689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 34187409 = 8030^2 + 5847^2 .

It is a cyclic number.

It is not a de Polignac number, because 98668309 - 2⁹ = 98667797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98668909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49334154 + 49334155.

It is an arithmetic number, because the mean of its divisors is an integer number (49334155).

Almost surely, 2^98668309 is an apocalyptic number.

It is an amenable number.

98668309 is a deficient number, since it is larger than the sum of its proper divisors (1).

98668309 is an equidigital number, since it uses as much as digits as its factorization.

98668309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 98668309 is about 9933.1922864706. The cubic root of 98668309 is about 462.0892817338.

The spelling of 98668309 in words is "ninety-eight million, six hundred sixty-eight thousand, three hundred nine".