98975797 has 2 divisors, whose sum is σ = 98975798. Its totient is φ = 98975796.

The previous prime is 98975791. The next prime is 98975801. The reversal of 98975797 is 79757989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93528241 + 5447556 = 9671^2 + 2334^2 .

It is an emirp because it is prime and its reverse (79757989) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98975797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98975791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49487898 + 49487899.

It is an arithmetic number, because the mean of its divisors is an integer number (49487899).

Almost surely, 2^98975797 is an apocalyptic number.

It is an amenable number.

98975797 is a deficient number, since it is larger than the sum of its proper divisors (1).

98975797 is an equidigital number, since it uses as much as digits as its factorization.

98975797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10001880, while the sum is 61.

The square root of 98975797 is about 9948.6580502096. The cubic root of 98975797 is about 462.5687993099.

The spelling of 98975797 in words is "ninety-eight million, nine hundred seventy-five thousand, seven hundred ninety-seven".