12789841 has 4 divisors (see below), whose sum is σ = 13230900. Its totient is φ = 12348784.

The previous prime is 12789823. The next prime is 12789857. The reversal of 12789841 is 14898721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14898721 = 29 ⋅513749.

It can be written as a sum of positive squares in 2 ways, for example, as 7049025 + 5740816 = 2655^2 + 2396^2 .

It is a cyclic number.

It is not a de Polignac number, because 12789841 - 2¹³ = 12781649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12789794 and 12789803.

It is not an unprimeable number, because it can be changed into a prime (12789811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220486 + ... + 220543.

It is an arithmetic number, because the mean of its divisors is an integer number (3307725).

Almost surely, 2^12789841 is an apocalyptic number.

It is an amenable number.

12789841 is a deficient number, since it is larger than the sum of its proper divisors (441059).

12789841 is an equidigital number, since it uses as much as digits as its factorization.

12789841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441058.

The product of its digits is 32256, while the sum is 40.

The square root of 12789841 is about 3576.2887187698. The cubic root of 12789841 is about 233.8595170604.

The spelling of 12789841 in words is "twelve million, seven hundred eighty-nine thousand, eight hundred forty-one".