99216697 has 2 divisors, whose sum is σ = 99216698. Its totient is φ = 99216696.

The previous prime is 99216673. The next prime is 99216731. The reversal of 99216697 is 79661299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77510416 + 21706281 = 8804^2 + 4659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99216697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99216697.

It is not a weakly prime, because it can be changed into another prime (99216197) 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, 49608348 + 49608349.

It is an arithmetic number, because the mean of its divisors is an integer number (49608349).

Almost surely, 2^99216697 is an apocalyptic number.

It is an amenable number.

99216697 is a deficient number, since it is larger than the sum of its proper divisors (1).

99216697 is an equidigital number, since it uses as much as digits as its factorization.

99216697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 49.

The square root of 99216697 is about 9960.7578526937. The cubic root of 99216697 is about 462.9437816883.

It can be divided in two parts, 992 and 16697, that added together give a square (17689 = 133²).

The spelling of 99216697 in words is "ninety-nine million, two hundred sixteen thousand, six hundred ninety-seven".