99097897 has 2 divisors, whose sum is σ = 99097898. Its totient is φ = 99097896.

The previous prime is 99097853. The next prime is 99098023. The reversal of 99097897 is 79879099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88755241 + 10342656 = 9421^2 + 3216^2 .

It is an emirp because it is prime and its reverse (79879099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99097897 - 2⁷ = 99097769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99097807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49548948 + 49548949.

It is an arithmetic number, because the mean of its divisors is an integer number (49548949).

Almost surely, 2^99097897 is an apocalyptic number.

It is an amenable number.

99097897 is a deficient number, since it is larger than the sum of its proper divisors (1).

99097897 is an equidigital number, since it uses as much as digits as its factorization.

99097897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The square root of 99097897 is about 9954.7926648424. The cubic root of 99097897 is about 462.7589348209.

The spelling of 99097897 in words is "ninety-nine million, ninety-seven thousand, eight hundred ninety-seven".