99999166 has 24 divisors (see below), whose sum is σ = 162040824. Its totient is φ = 46252080.

The previous prime is 99999157. The next prime is 99999167. The reversal of 99999166 is 66199999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99999166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29436 + ... + 32656.

It is an arithmetic number, because the mean of its divisors is an integer number (6751701).

Almost surely, 2^99999166 is an apocalyptic number.

99999166 is a deficient number, since it is larger than the sum of its proper divisors (62041658).

99999166 is a wasteful number, since it uses less digits than its factorization.

99999166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3285 counting only the distinct ones).

The product of its digits is 2125764, while the sum is 58.

The square root of 99999166 is about 9999.9582999131. The cubic root of 99999166 is about 464.1575929960.

The spelling of 99999166 in words is "ninety-nine million, nine hundred ninety-nine thousand, one hundred sixty-six".