99166699 has 2 divisors, whose sum is σ = 99166700. Its totient is φ = 99166698.

The previous prime is 99166693. The next prime is 99166721. The reversal of 99166699 is 99666199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99166699 - 2²¹ = 97069547 is a prime.

It is not a weakly prime, because it can be changed into another prime (99166693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49583349 + 49583350.

It is an arithmetic number, because the mean of its divisors is an integer number (49583350).

Almost surely, 2^99166699 is an apocalyptic number.

99166699 is a deficient number, since it is larger than the sum of its proper divisors (1).

99166699 is an equidigital number, since it uses as much as digits as its factorization.

99166699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417176, while the sum is 55.

The square root of 99166699 is about 9958.2477876381. The cubic root of 99166699 is about 462.8660052892.

Subtracting 99166699 from its reverse (99666199), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 99166699 in words is "ninety-nine million, one hundred sixty-six thousand, six hundred ninety-nine".