12789541 has 4 divisors (see below), whose sum is σ = 13345632. Its totient is φ = 12233452.

The previous prime is 12789503. The next prime is 12789571. The reversal of 12789541 is 14598721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14598721 = 23 ⋅634727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12789541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12789541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789571) 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, 278011 + ... + 278056.

It is an arithmetic number, because the mean of its divisors is an integer number (3336408).

Almost surely, 2^12789541 is an apocalyptic number.

It is an amenable number.

12789541 is a deficient number, since it is larger than the sum of its proper divisors (556091).

12789541 is an equidigital number, since it uses as much as digits as its factorization.

12789541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556090.

The product of its digits is 20160, while the sum is 37.

The square root of 12789541 is about 3576.2467756015. The cubic root of 12789541 is about 233.8576885674.

The spelling of 12789541 in words is "twelve million, seven hundred eighty-nine thousand, five hundred forty-one".