12351789 has 6 divisors (see below), whose sum is σ = 17841486. Its totient is φ = 8234520.

The previous prime is 12351769. The next prime is 12351797. The reversal of 12351789 is 98715321.

12351789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8311689 + 4040100 = 2883^2 + 2010^2 .

It is not a de Polignac number, because 12351789 - 2⁸ = 12351533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686202 + ... + 686219.

It is an arithmetic number, because the mean of its divisors is an integer number (2973581).

Almost surely, 2^12351789 is an apocalyptic number.

It is an amenable number.

12351789 is a deficient number, since it is larger than the sum of its proper divisors (5489697).

12351789 is a wasteful number, since it uses less digits than its factorization.

12351789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372427 (or 1372424 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12351789 is about 3514.5112035673. The cubic root of 12351789 is about 231.1585463548.

The spelling of 12351789 in words is "twelve million, three hundred fifty-one thousand, seven hundred eighty-nine".