16943689 has 8 divisors (see below), whose sum is σ = 19392768. Its totient is φ = 14501760.

The previous prime is 16943681. The next prime is 16943699. The reversal of 16943689 is 98634961.

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

It is not a de Polignac number, because 16943689 - 2³ = 16943681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16943681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5049 + ... + 7705.

It is an arithmetic number, because the mean of its divisors is an integer number (2424096).

Almost surely, 2^16943689 is an apocalyptic number.

It is an amenable number.

16943689 is a deficient number, since it is larger than the sum of its proper divisors (2449079).

16943689 is an equidigital number, since it uses as much as digits as its factorization.

16943689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575.

The product of its digits is 279936, while the sum is 46.

The square root of 16943689 is about 4116.2712495656. The cubic root of 16943689 is about 256.8439402381.

The spelling of 16943689 in words is "sixteen million, nine hundred forty-three thousand, six hundred eighty-nine".