98818997 has 2 divisors, whose sum is σ = 98818998. Its totient is φ = 98818996.

The previous prime is 98818991. The next prime is 98818999. The reversal of 98818997 is 79981889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54848836 + 43970161 = 7406^2 + 6631^2 .

It is a cyclic number.

It is not a de Polignac number, because 98818997 - 2¹⁰ = 98817973 is a prime.

Together with 98818999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98818991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49409498 + 49409499.

It is an arithmetic number, because the mean of its divisors is an integer number (49409499).

Almost surely, 2^98818997 is an apocalyptic number.

It is an amenable number.

98818997 is a deficient number, since it is larger than the sum of its proper divisors (1).

98818997 is an equidigital number, since it uses as much as digits as its factorization.

98818997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 59.

The square root of 98818997 is about 9940.7744668109. The cubic root of 98818997 is about 462.3243990781.

The spelling of 98818997 in words is "ninety-eight million, eight hundred eighteen thousand, nine hundred ninety-seven".