16945999 has 8 divisors (see below), whose sum is σ = 19817600. Its totient is φ = 14187096.

The previous prime is 16945961. The next prime is 16946021. The reversal of 16945999 is 99954961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16945999 - 2¹³ = 16937807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16945909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27849 + ... + 28450.

It is an arithmetic number, because the mean of its divisors is an integer number (2477200).

Almost surely, 2^16945999 is an apocalyptic number.

16945999 is a deficient number, since it is larger than the sum of its proper divisors (2871601).

16945999 is an equidigital number, since it uses as much as digits as its factorization.

16945999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56349.

The product of its digits is 787320, while the sum is 52.

The square root of 16945999 is about 4116.5518337560. The cubic root of 16945999 is about 256.8556118905.

The spelling of 16945999 in words is "sixteen million, nine hundred forty-five thousand, nine hundred ninety-nine".