12385289 has 6 divisors (see below), whose sum is σ = 14407434. Its totient is φ = 10615920.

The previous prime is 12385279. The next prime is 12385297. The reversal of 12385289 is 98258321.

It can be written as a sum of positive squares in only one way, i.e., 6210064 + 6175225 = 2492^2 + 2485^2 .

It is not a de Polignac number, because 12385289 - 2⁴ = 12385273 is a prime.

It is a super-2 number, since 2×12385289² = 306790767227042, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12385249) 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 in 5 ways as a sum of consecutive naturals, for example, 126332 + ... + 126429.

It is an arithmetic number, because the mean of its divisors is an integer number (2401239).

Almost surely, 2^12385289 is an apocalyptic number.

It is an amenable number.

12385289 is a deficient number, since it is larger than the sum of its proper divisors (2022145).

12385289 is an equidigital number, since it uses as much as digits as its factorization.

12385289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252775 (or 252768 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 12385289 is about 3519.2739307988. The cubic root of 12385289 is about 231.3673371898.

The spelling of 12385289 in words is "twelve million, three hundred eighty-five thousand, two hundred eighty-nine".