12869789 has 4 divisors (see below), whose sum is σ = 12920124. Its totient is φ = 12819456.

The previous prime is 12869749. The next prime is 12869807. The reversal of 12869789 is 98796821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11957764 + 912025 = 3458^2 + 955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12869789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12869749) 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, 24782 + ... + 25295.

It is an arithmetic number, because the mean of its divisors is an integer number (3230031).

Almost surely, 2^12869789 is an apocalyptic number.

It is an amenable number.

12869789 is a deficient number, since it is larger than the sum of its proper divisors (50335).

12869789 is an equidigital number, since it uses as much as digits as its factorization.

12869789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50334.

The product of its digits is 435456, while the sum is 50.

The square root of 12869789 is about 3587.4488149659. The cubic root of 12869789 is about 234.3457826453.

The spelling of 12869789 in words is "twelve million, eight hundred sixty-nine thousand, seven hundred eighty-nine".