99166407 has 4 divisors (see below), whose sum is σ = 132221880. Its totient is φ = 66110936.

The previous prime is 99166391. The next prime is 99166421. The reversal of 99166407 is 70466199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70466199 = 3 ⋅23488733.

It is a cyclic number.

It is not a de Polignac number, because 99166407 - 2⁴ = 99166391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99166447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16527732 + ... + 16527737.

It is an arithmetic number, because the mean of its divisors is an integer number (33055470).

Almost surely, 2^99166407 is an apocalyptic number.

99166407 is a deficient number, since it is larger than the sum of its proper divisors (33055473).

99166407 is a wasteful number, since it uses less digits than its factorization.

99166407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33055472.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 99166407 is about 9958.2331264135. The cubic root of 99166407 is about 462.8655509800.

The spelling of 99166407 in words is "ninety-nine million, one hundred sixty-six thousand, four hundred seven".