12906789 has 8 divisors (see below), whose sum is σ = 19667520. Its totient is φ = 7375296.

The previous prime is 12906787. The next prime is 12906793. The reversal of 12906789 is 98760921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12906789 - 2¹ = 12906787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12906789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906787) 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 7 ways as a sum of consecutive naturals, for example, 307284 + ... + 307325.

It is an arithmetic number, because the mean of its divisors is an integer number (2458440).

Almost surely, 2^12906789 is an apocalyptic number.

It is an amenable number.

12906789 is a deficient number, since it is larger than the sum of its proper divisors (6760731).

12906789 is an equidigital number, since it uses as much as digits as its factorization.

12906789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614619.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12906789 is about 3592.6019818510. The cubic root of 12906789 is about 234.5701452420.

It can be divided in two parts, 12906 and 789, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 12906789 in words is "twelve million, nine hundred six thousand, seven hundred eighty-nine".