16085989 has 8 divisors (see below), whose sum is σ = 16981280. Its totient is φ = 15195600.

The previous prime is 16085987. The next prime is 16086001. The reversal of 16085989 is 98958061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16085989 - 2¹ = 16085987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16085987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6994 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (2122660).

Almost surely, 2^16085989 is an apocalyptic number.

16085989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16085989 is a deficient number, since it is larger than the sum of its proper divisors (895291).

16085989 is a wasteful number, since it uses less digits than its factorization.

16085989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 16085989 is about 4010.7342220596. The cubic root of 16085989 is about 252.4348176681.

The spelling of 16085989 in words is "sixteen million, eighty-five thousand, nine hundred eighty-nine".