16086891 has 4 divisors (see below), whose sum is σ = 21449192. Its totient is φ = 10724592.

The previous prime is 16086877. The next prime is 16086893. The reversal of 16086891 is 19868061.

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

It is not a de Polignac number, because 16086891 - 2⁶ = 16086827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16086893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681146 + ... + 2681151.

It is an arithmetic number, because the mean of its divisors is an integer number (5362298).

Almost surely, 2^16086891 is an apocalyptic number.

16086891 is a deficient number, since it is larger than the sum of its proper divisors (5362301).

16086891 is an equidigital number, since it uses as much as digits as its factorization.

16086891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362300.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 16086891 is about 4010.8466687222. The cubic root of 16086891 is about 252.4395358932.

The spelling of 16086891 in words is "sixteen million, eighty-six thousand, eight hundred ninety-one".