16839005 has 4 divisors (see below), whose sum is σ = 20206812. Its totient is φ = 13471200.

The previous prime is 16838981. The next prime is 16839007. The reversal of 16839005 is 50093861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13293316 + 3545689 = 3646^2 + 1883^2 .

It is not a de Polignac number, because 16839005 - 2¹⁴ = 16822621 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 (16839007) 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 3 ways as a sum of consecutive naturals, for example, 1683896 + ... + 1683905.

It is an arithmetic number, because the mean of its divisors is an integer number (5051703).

Almost surely, 2^16839005 is an apocalyptic number.

It is an amenable number.

16839005 is a deficient number, since it is larger than the sum of its proper divisors (3367807).

16839005 is an equidigital number, since it uses as much as digits as its factorization.

16839005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367806.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 16839005 is about 4103.5356706138. The cubic root of 16839005 is about 256.3138900775.

The spelling of 16839005 in words is "sixteen million, eight hundred thirty-nine thousand, five".