16494999 has 4 divisors (see below), whose sum is σ = 21993336. Its totient is φ = 10996664.

The previous prime is 16494943. The next prime is 16495001. The reversal of 16494999 is 99949461.

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 16494999 - 2⁷ = 16494871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16492999) 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, 2749164 + ... + 2749169.

It is an arithmetic number, because the mean of its divisors is an integer number (5498334).

Almost surely, 2^16494999 is an apocalyptic number.

16494999 is a deficient number, since it is larger than the sum of its proper divisors (5498337).

16494999 is an equidigital number, since it uses as much as digits as its factorization.

16494999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498336.

The product of its digits is 629856, while the sum is 51.

The square root of 16494999 is about 4061.4035751203. The cubic root of 16494999 is about 254.5564453704.

The spelling of 16494999 in words is "sixteen million, four hundred ninety-four thousand, nine hundred ninety-nine".