12005089 has 4 divisors (see below), whose sum is σ = 12046356. Its totient is φ = 11963824.

The previous prime is 12005053. The next prime is 12005099. The reversal of 12005089 is 98050021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11614464 + 390625 = 3408^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 12005089 - 2¹⁵ = 11972321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12005099) 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, 20194 + ... + 20779.

It is an arithmetic number, because the mean of its divisors is an integer number (3011589).

Almost surely, 2^12005089 is an apocalyptic number.

It is an amenable number.

12005089 is a deficient number, since it is larger than the sum of its proper divisors (41267).

12005089 is an equidigital number, since it uses as much as digits as its factorization.

12005089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41266.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 12005089 is about 3464.8360711583. The cubic root of 12005089 is about 228.9752075522.

The spelling of 12005089 in words is "twelve million, five thousand, eighty-nine".