16854609 has 4 divisors (see below), whose sum is σ = 22472816. Its totient is φ = 11236404.

The previous prime is 16854601. The next prime is 16854613. The reversal of 16854609 is 90645861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16854609 - 2³ = 16854601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16854601) 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, 2809099 + ... + 2809104.

It is an arithmetic number, because the mean of its divisors is an integer number (5618204).

Almost surely, 2^16854609 is an apocalyptic number.

It is an amenable number.

16854609 is a deficient number, since it is larger than the sum of its proper divisors (5618207).

16854609 is an equidigital number, since it uses as much as digits as its factorization.

16854609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618206.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 16854609 is about 4105.4365175947. The cubic root of 16854609 is about 256.3930374139.

The spelling of 16854609 in words is "sixteen million, eight hundred fifty-four thousand, six hundred nine".