12259989 has 24 divisors (see below), whose sum is σ = 21121152. Its totient is φ = 6700320.

The previous prime is 12259981. The next prime is 12260033. The reversal of 12259989 is 98995221.

12259989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12259989 - 2³ = 12259981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2782 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (880048).

Almost surely, 2^12259989 is an apocalyptic number.

It is an amenable number.

12259989 is a deficient number, since it is larger than the sum of its proper divisors (8861163).

12259989 is a wasteful number, since it uses less digits than its factorization.

12259989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8497 (or 8494 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 12259989 is about 3501.4267092144. The cubic root of 12259989 is about 230.5844556042.

The spelling of 12259989 in words is "twelve million, two hundred fifty-nine thousand, nine hundred eighty-nine".