12823929 has 6 divisors (see below), whose sum is σ = 18523466. Its totient is φ = 8549280.

The previous prime is 12823927. The next prime is 12823961. The reversal of 12823929 is 92932821.

It can be written as a sum of positive squares in only one way, i.e., 12766329 + 57600 = 3573^2 + 240^2 .

It is not a de Polignac number, because 12823929 - 2¹ = 12823927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12823893 and 12823902.

It is not an unprimeable number, because it can be changed into a prime (12823927) 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, 712432 + ... + 712449.

Almost surely, 2^12823929 is an apocalyptic number.

It is an amenable number.

12823929 is a deficient number, since it is larger than the sum of its proper divisors (5699537).

12823929 is a wasteful number, since it uses less digits than its factorization.

12823929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424887 (or 1424884 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12823929 is about 3581.0513819268. The cubic root of 12823929 is about 234.0670966915.

It can be divided in two parts, 1282392 and 9, that added together give a triangular number (1282401 = T₁₆₀₁).

The spelling of 12823929 in words is "twelve million, eight hundred twenty-three thousand, nine hundred twenty-nine".