99597097 has 2 divisors, whose sum is σ = 99597098. Its totient is φ = 99597096.

The previous prime is 99597059. The next prime is 99597103. The reversal of 99597097 is 79079599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86787856 + 12809241 = 9316^2 + 3579^2 .

It is an emirp because it is prime and its reverse (79079599) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99597097 is a prime.

It is not a weakly prime, because it can be changed into another prime (99597037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49798548 + 49798549.

It is an arithmetic number, because the mean of its divisors is an integer number (49798549).

Almost surely, 2^99597097 is an apocalyptic number.

It is an amenable number.

99597097 is a deficient number, since it is larger than the sum of its proper divisors (1).

99597097 is an equidigital number, since it uses as much as digits as its factorization.

99597097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 99597097 is about 9979.8345176661. The cubic root of 99597097 is about 463.5346742682.

The spelling of 99597097 in words is "ninety-nine million, five hundred ninety-seven thousand, ninety-seven".