12443769 has 12 divisors (see below), whose sum is σ = 19357156. Its totient is φ = 7657632.

The previous prime is 12443747. The next prime is 12443771. The reversal of 12443769 is 96734421.

It can be written as a sum of positive squares in 2 ways, for example, as 8294400 + 4149369 = 2880^2 + 2037^2 .

It is not a de Polignac number, because 12443769 - 2¹¹ = 12441721 is a prime.

It is a super-2 number, since 2×12443769² = 309694773850722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12443719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53062 + ... + 53295.

Almost surely, 2^12443769 is an apocalyptic number.

It is an amenable number.

12443769 is a deficient number, since it is larger than the sum of its proper divisors (6913387).

12443769 is a wasteful number, since it uses less digits than its factorization.

12443769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106376 (or 106373 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 12443769 is about 3527.5726782024. The cubic root of 12443769 is about 231.7309169709.

The spelling of 12443769 in words is "twelve million, four hundred forty-three thousand, seven hundred sixty-nine".