12287489 has 2 divisors, whose sum is σ = 12287490. Its totient is φ = 12287488.

The previous prime is 12287479. The next prime is 12287519. The reversal of 12287489 is 98478221.

12287489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 350464 = 3455^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 12287489 - 2¹² = 12283393 is a prime.

It is a super-3 number, since 3×12287489³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12287419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143744 + 6143745.

It is an arithmetic number, because the mean of its divisors is an integer number (6143745).

Almost surely, 2^12287489 is an apocalyptic number.

It is an amenable number.

12287489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12287489 is an equidigital number, since it uses as much as digits as its factorization.

12287489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 12287489 is about 3505.3514802370. The cubic root of 12287489 is about 230.7567324656.

The spelling of 12287489 in words is "twelve million, two hundred eighty-seven thousand, four hundred eighty-nine".