16855239 has 8 divisors (see below), whose sum is σ = 23081200. Its totient is φ = 10933056.

The previous prime is 16855213. The next prime is 16855249. The reversal of 16855239 is 93255861.

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

It is not a de Polignac number, because 16855239 - 2⁸ = 16854983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16855197 and 16855206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855249) 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, 75814 + ... + 76035.

It is an arithmetic number, because the mean of its divisors is an integer number (2885150).

Almost surely, 2^16855239 is an apocalyptic number.

16855239 is a deficient number, since it is larger than the sum of its proper divisors (6225961).

16855239 is a wasteful number, since it uses less digits than its factorization.

16855239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151889.

The product of its digits is 64800, while the sum is 39.

The square root of 16855239 is about 4105.5132444068. The cubic root of 16855239 is about 256.3962319031.

The spelling of 16855239 in words is "sixteen million, eight hundred fifty-five thousand, two hundred thirty-nine".