16089987 has 8 divisors (see below), whose sum is σ = 21548736. Its totient is φ = 10678952.

The previous prime is 16089971. The next prime is 16089989. The reversal of 16089987 is 78998061.

It is a happy number.

16089987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16089987 - 2⁴ = 16089971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16089989) 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, 11133 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (2693592).

Almost surely, 2^16089987 is an apocalyptic number.

16089987 is a deficient number, since it is larger than the sum of its proper divisors (5458749).

16089987 is a wasteful number, since it uses less digits than its factorization.

16089987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23857.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 16089987 is about 4011.2326035771. The cubic root of 16089987 is about 252.4557292577.

The spelling of 16089987 in words is "sixteen million, eighty-nine thousand, nine hundred eighty-seven".