12445689 has 8 divisors (see below), whose sum is σ = 16643200. Its totient is φ = 8272656.

The previous prime is 12445687. The next prime is 12445709. The reversal of 12445689 is 98654421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12445689 - 2¹ = 12445687 is a prime.

It is a super-3 number, since 3×12445689³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12445681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4897 + ... + 6990.

It is an arithmetic number, because the mean of its divisors is an integer number (2080400).

Almost surely, 2^12445689 is an apocalyptic number.

It is an amenable number.

12445689 is a deficient number, since it is larger than the sum of its proper divisors (4197511).

12445689 is a wasteful number, since it uses less digits than its factorization.

12445689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12239.

The product of its digits is 69120, while the sum is 39.

The square root of 12445689 is about 3527.8448095119. The cubic root of 12445689 is about 231.7428345949.

The spelling of 12445689 in words is "twelve million, four hundred forty-five thousand, six hundred eighty-nine".