12689041 has 4 divisors (see below), whose sum is σ = 12696292. Its totient is φ = 12681792.

The previous prime is 12689029. The next prime is 12689051. The reversal of 12689041 is 14098621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8673025 + 4016016 = 2945^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 12689041 - 2¹⁷ = 12557969 is a prime.

It is a super-2 number, since 2×12689041² = 322023522999362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12688994 and 12689012.

It is not an unprimeable number, because it can be changed into a prime (12689051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (3174073).

Almost surely, 2^12689041 is an apocalyptic number.

It is an amenable number.

12689041 is a deficient number, since it is larger than the sum of its proper divisors (7251).

12689041 is an equidigital number, since it uses as much as digits as its factorization.

12689041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12689041 is about 3562.1680196195. The cubic root of 12689041 is about 233.2435271175.

The spelling of 12689041 in words is "twelve million, six hundred eighty-nine thousand, forty-one".