99166189 has 2 divisors, whose sum is σ = 99166190. Its totient is φ = 99166188.

The previous prime is 99166183. The next prime is 99166229. The reversal of 99166189 is 98166199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 11594025 = 9358^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 99166189 - 2³ = 99166181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99166181) 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, 49583094 + 49583095.

It is an arithmetic number, because the mean of its divisors is an integer number (49583095).

Almost surely, 2^99166189 is an apocalyptic number.

It is an amenable number.

99166189 is a deficient number, since it is larger than the sum of its proper divisors (1).

99166189 is an equidigital number, since it uses as much as digits as its factorization.

99166189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 49.

The square root of 99166189 is about 9958.2221806907. Note that the first 3 decimals coincide. The cubic root of 99166189 is about 462.8652118035.

The spelling of 99166189 in words is "ninety-nine million, one hundred sixty-six thousand, one hundred eighty-nine".