16990839 has 12 divisors (see below), whose sum is σ = 25389000. Its totient is φ = 10936464.

The previous prime is 16990817. The next prime is 16990843. The reversal of 16990839 is 93809961.

It is not a de Polignac number, because 16990839 - 2¹¹ = 16988791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16990794 and 16990803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990889) 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 11 ways as a sum of consecutive naturals, for example, 32289 + ... + 32810.

It is an arithmetic number, because the mean of its divisors is an integer number (2115750).

Almost surely, 2^16990839 is an apocalyptic number.

16990839 is a deficient number, since it is larger than the sum of its proper divisors (8398161).

16990839 is a wasteful number, since it uses less digits than its factorization.

16990839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65134 (or 65131 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 16990839 is about 4121.9945414811. The cubic root of 16990839 is about 257.0819634910.

Adding to 16990839 its sum of digits (45), we get a square (16990884 = 4122²).

The spelling of 16990839 in words is "sixteen million, nine hundred ninety thousand, eight hundred thirty-nine".