16997199 has 4 divisors (see below), whose sum is σ = 22662936. Its totient is φ = 11331464.

The previous prime is 16997143. The next prime is 16997203. The reversal of 16997199 is 99179961.

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 16997199 - 2⁸ = 16996943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997999) 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, 2832864 + ... + 2832869.

It is an arithmetic number, because the mean of its divisors is an integer number (5665734).

Almost surely, 2^16997199 is an apocalyptic number.

16997199 is a deficient number, since it is larger than the sum of its proper divisors (5665737).

16997199 is an equidigital number, since it uses as much as digits as its factorization.

16997199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665736.

The product of its digits is 275562, while the sum is 51.

The square root of 16997199 is about 4122.7659404822. The cubic root of 16997199 is about 257.1140364083.

The spelling of 16997199 in words is "sixteen million, nine hundred ninety-seven thousand, one hundred ninety-nine".