98391773 has 2 divisors, whose sum is σ = 98391774. Its totient is φ = 98391772.

The previous prime is 98391757. The next prime is 98391779. The reversal of 98391773 is 37719389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 42471289 = 7478^2 + 6517^2 .

It is a cyclic number.

It is not a de Polignac number, because 98391773 - 2⁴ = 98391757 is a prime.

It is a Sophie Germain 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 (98391779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49195886 + 49195887.

It is an arithmetic number, because the mean of its divisors is an integer number (49195887).

Almost surely, 2^98391773 is an apocalyptic number.

It is an amenable number.

98391773 is a deficient number, since it is larger than the sum of its proper divisors (1).

98391773 is an equidigital number, since it uses as much as digits as its factorization.

98391773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 98391773 is about 9919.2627246182. The cubic root of 98391773 is about 461.6571811982.

The spelling of 98391773 in words is "ninety-eight million, three hundred ninety-one thousand, seven hundred seventy-three".