16887959 has 4 divisors (see below), whose sum is σ = 18423240. Its totient is φ = 15352680.

The previous prime is 16887931. The next prime is 16887961. The reversal of 16887959 is 95978861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16887959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16887959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887659) 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, 767624 + ... + 767645.

It is an arithmetic number, because the mean of its divisors is an integer number (4605810).

Almost surely, 2^16887959 is an apocalyptic number.

16887959 is a deficient number, since it is larger than the sum of its proper divisors (1535281).

16887959 is a wasteful number, since it uses less digits than its factorization.

16887959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535280.

The product of its digits is 1088640, while the sum is 53.

The square root of 16887959 is about 4109.4961978325. The cubic root of 16887959 is about 256.5620332113.

The spelling of 16887959 in words is "sixteen million, eight hundred eighty-seven thousand, nine hundred fifty-nine".