16985433 has 4 divisors (see below), whose sum is σ = 22647248. Its totient is φ = 11323620.

The previous prime is 16985429. The next prime is 16985443. The reversal of 16985433 is 33458961.

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 16985433 - 2² = 16985429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16985391 and 16985400.

It is not an unprimeable number, because it can be changed into a prime (16985443) 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, 2830903 + ... + 2830908.

It is an arithmetic number, because the mean of its divisors is an integer number (5661812).

Almost surely, 2^16985433 is an apocalyptic number.

It is an amenable number.

16985433 is a deficient number, since it is larger than the sum of its proper divisors (5661815).

16985433 is an equidigital number, since it uses as much as digits as its factorization.

16985433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661814.

The product of its digits is 77760, while the sum is 39.

The square root of 16985433 is about 4121.3387388081. The cubic root of 16985433 is about 257.0546952179.

The spelling of 16985433 in words is "sixteen million, nine hundred eighty-five thousand, four hundred thirty-three".