16885439 has 4 divisors (see below), whose sum is σ = 16913424. Its totient is φ = 16857456.

The previous prime is 16885423. The next prime is 16885441. The reversal of 16885439 is 93458861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93458861 = 7517 ⋅12433.

It is a cyclic number.

It is not a de Polignac number, because 16885439 - 2⁴ = 16885423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16885439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16885409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13067 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (4228356).

Almost surely, 2^16885439 is an apocalyptic number.

16885439 is a deficient number, since it is larger than the sum of its proper divisors (27985).

16885439 is an equidigital number, since it uses as much as digits as its factorization.

16885439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27984.

The product of its digits is 207360, while the sum is 44.

The square root of 16885439 is about 4109.1895794670. The cubic root of 16885439 is about 256.5492712885.

The spelling of 16885439 in words is "sixteen million, eight hundred eighty-five thousand, four hundred thirty-nine".