12009889 has 8 divisors (see below), whose sum is σ = 12169728. Its totient is φ = 11851440.

The previous prime is 12009869. The next prime is 12009901. The reversal of 12009889 is 98890021.

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 12009889 - 2⁹ = 12009377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12009859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43219 + ... + 43495.

It is an arithmetic number, because the mean of its divisors is an integer number (1521216).

Almost surely, 2^12009889 is an apocalyptic number.

It is an amenable number.

12009889 is a deficient number, since it is larger than the sum of its proper divisors (159839).

12009889 is a wasteful number, since it uses less digits than its factorization.

12009889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 12009889 is about 3465.5286753972. The cubic root of 12009889 is about 229.0057205718.

The spelling of 12009889 in words is "twelve million, nine thousand, eight hundred eighty-nine".