98744309 has 2 divisors, whose sum is σ = 98744310. Its totient is φ = 98744308.

The previous prime is 98744293. The next prime is 98744329. The reversal of 98744309 is 90344789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95844100 + 2900209 = 9790^2 + 1703^2 .

It is a cyclic number.

It is not a de Polignac number, because 98744309 - 2⁴ = 98744293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98744309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98744329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49372154 + 49372155.

It is an arithmetic number, because the mean of its divisors is an integer number (49372155).

Almost surely, 2^98744309 is an apocalyptic number.

It is an amenable number.

98744309 is a deficient number, since it is larger than the sum of its proper divisors (1).

98744309 is an equidigital number, since it uses as much as digits as its factorization.

98744309 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 44.

The square root of 98744309 is about 9937.0171077643. The cubic root of 98744309 is about 462.2078938555.

The spelling of 98744309 in words is "ninety-eight million, seven hundred forty-four thousand, three hundred nine".