98188289 has 2 divisors, whose sum is σ = 98188290. Its totient is φ = 98188288.

The previous prime is 98188273. The next prime is 98188291. The reversal of 98188289 is 98288189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 39589264 = 7655^2 + 6292^2 .

It is an emirp because it is prime and its reverse (98288189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98188289 - 2⁴ = 98188273 is a prime.

Together with 98188291, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98188289.

It is not a weakly prime, because it can be changed into another prime (98188249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49094144 + 49094145.

It is an arithmetic number, because the mean of its divisors is an integer number (49094145).

Almost surely, 2^98188289 is an apocalyptic number.

It is an amenable number.

98188289 is a deficient number, since it is larger than the sum of its proper divisors (1).

98188289 is an equidigital number, since it uses as much as digits as its factorization.

98188289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 53.

The square root of 98188289 is about 9909.0004036734. Note that the first 3 decimals coincide. The cubic root of 98188289 is about 461.3387105223.

The spelling of 98188289 in words is "ninety-eight million, one hundred eighty-eight thousand, two hundred eighty-nine".