98128817 has 2 divisors, whose sum is σ = 98128818. Its totient is φ = 98128816.

The previous prime is 98128801. The next prime is 98128831. The reversal of 98128817 is 71882189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98089216 + 39601 = 9904^2 + 199^2 .

It is a cyclic number.

It is not a de Polignac number, because 98128817 - 2⁴ = 98128801 is a prime.

It is a super-3 number, since 3×98128817³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98128117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49064408 + 49064409.

It is an arithmetic number, because the mean of its divisors is an integer number (49064409).

Almost surely, 2^98128817 is an apocalyptic number.

It is an amenable number.

98128817 is a deficient number, since it is larger than the sum of its proper divisors (1).

98128817 is an equidigital number, since it uses as much as digits as its factorization.

98128817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 44.

The square root of 98128817 is about 9905.9990409852. Note that the first 3 decimals coincide. The cubic root of 98128817 is about 461.2455484376.

The spelling of 98128817 in words is "ninety-eight million, one hundred twenty-eight thousand, eight hundred seventeen".