16887329 has 4 divisors (see below), whose sum is σ = 16900800. Its totient is φ = 16873860.

The previous prime is 16887319. The next prime is 16887331. The reversal of 16887329 is 92378861.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92378861 = 5503 ⋅16787.

It is a cyclic number.

It is not a de Polignac number, because 16887329 - 2¹² = 16883233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16887329.

It is not an unprimeable number, because it can be changed into a prime (16887319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (4225200).

Almost surely, 2^16887329 is an apocalyptic number.

It is an amenable number.

16887329 is a deficient number, since it is larger than the sum of its proper divisors (13471).

16887329 is a wasteful number, since it uses less digits than its factorization.

16887329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13470.

The product of its digits is 145152, while the sum is 44.

The square root of 16887329 is about 4109.4195453859. The cubic root of 16887329 is about 256.5588428496.

The spelling of 16887329 in words is "sixteen million, eight hundred eighty-seven thousand, three hundred twenty-nine".