97598909 has 2 divisors, whose sum is σ = 97598910. Its totient is φ = 97598908.

The previous prime is 97598869. The next prime is 97598929. The reversal of 97598909 is 90989579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 24025 = 9878^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 97598909 - 2⁸ = 97598653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97598929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48799454 + 48799455.

It is an arithmetic number, because the mean of its divisors is an integer number (48799455).

Almost surely, 2^97598909 is an apocalyptic number.

It is an amenable number.

97598909 is a deficient number, since it is larger than the sum of its proper divisors (1).

97598909 is an equidigital number, since it uses as much as digits as its factorization.

97598909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 97598909 is about 9879.2160114050. The cubic root of 97598909 is about 460.4137880353.

The spelling of 97598909 in words is "ninety-seven million, five hundred ninety-eight thousand, nine hundred nine".