16889539 has 4 divisors (see below), whose sum is σ = 16957080. Its totient is φ = 16822000.

The previous prime is 16889527. The next prime is 16889569. The reversal of 16889539 is 93598861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93598861 = 2203 ⋅42487.

It is a cyclic number.

It is not a de Polignac number, because 16889539 - 2⁵ = 16889507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16889492 and 16889501.

It is not an unprimeable number, because it can be changed into a prime (16889519) 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, 33394 + ... + 33895.

It is an arithmetic number, because the mean of its divisors is an integer number (4239270).

Almost surely, 2^16889539 is an apocalyptic number.

16889539 is a deficient number, since it is larger than the sum of its proper divisors (67541).

16889539 is an equidigital number, since it uses as much as digits as its factorization.

16889539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67540.

The product of its digits is 466560, while the sum is 49.

The square root of 16889539 is about 4109.6884310127. The cubic root of 16889539 is about 256.5700340868.

The spelling of 16889539 in words is "sixteen million, eight hundred eighty-nine thousand, five hundred thirty-nine".