12016889 has 4 divisors (see below), whose sum is σ = 12029556. Its totient is φ = 12004224.

The previous prime is 12016883. The next prime is 12016891. The reversal of 12016889 is 98861021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98861021 = 7 ⋅14123003.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 1776889 = 3200^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 12016889 - 2⁸ = 12016633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12016883) 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, 4784 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (3007389).

Almost surely, 2^12016889 is an apocalyptic number.

It is an amenable number.

12016889 is a deficient number, since it is larger than the sum of its proper divisors (12667).

12016889 is a wasteful number, since it uses less digits than its factorization.

12016889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12016889 is about 3466.5384751940. The cubic root of 12016889 is about 229.0502041553.

The spelling of 12016889 in words is "twelve million, sixteen thousand, eight hundred eighty-nine".