12446689 has 4 divisors (see below), whose sum is σ = 12783124. Its totient is φ = 12110256.

The previous prime is 12446683. The next prime is 12446723. The reversal of 12446689 is 98664421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 613089 = 3440^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 12446689 - 2¹³ = 12438497 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12446683) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168162 + ... + 168235.

It is an arithmetic number, because the mean of its divisors is an integer number (3195781).

Almost surely, 2^12446689 is an apocalyptic number.

It is an amenable number.

12446689 is a deficient number, since it is larger than the sum of its proper divisors (336435).

12446689 is an equidigital number, since it uses as much as digits as its factorization.

12446689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336434.

The product of its digits is 82944, while the sum is 40.

The square root of 12446689 is about 3527.9865362555. The cubic root of 12446689 is about 231.7490412053.

The spelling of 12446689 in words is "twelve million, four hundred forty-six thousand, six hundred eighty-nine".