16990099 has 4 divisors (see below), whose sum is σ = 19417264. Its totient is φ = 14562936.

The previous prime is 16990097. The next prime is 16990111. The reversal of 16990099 is 99009961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16990099 - 2¹ = 16990097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16990091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213572 + ... + 1213585.

It is an arithmetic number, because the mean of its divisors is an integer number (4854316).

Almost surely, 2^16990099 is an apocalyptic number.

16990099 is a deficient number, since it is larger than the sum of its proper divisors (2427165).

16990099 is an equidigital number, since it uses as much as digits as its factorization.

16990099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427164.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 16990099 is about 4121.9047781335. The cubic root of 16990099 is about 257.0782312168.

The spelling of 16990099 in words is "sixteen million, nine hundred ninety thousand, ninety-nine".