12829945 has 4 divisors (see below), whose sum is σ = 15395940. Its totient is φ = 10263952.

The previous prime is 12829937. The next prime is 12829961. The reversal of 12829945 is 54992821.

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 6822544 + 6007401 = 2612^2 + 2451^2 .

It is a cyclic number.

It is not a de Polignac number, because 12829945 - 2³ = 12829937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12829898 and 12829907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282990 + ... + 1282999.

It is an arithmetic number, because the mean of its divisors is an integer number (3848985).

Almost surely, 2^12829945 is an apocalyptic number.

It is an amenable number.

12829945 is a deficient number, since it is larger than the sum of its proper divisors (2565995).

12829945 is an equidigital number, since it uses as much as digits as its factorization.

12829945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565994.

The product of its digits is 51840, while the sum is 40.

The square root of 12829945 is about 3581.8912602144. The cubic root of 12829945 is about 234.1036930553.

The spelling of 12829945 in words is "twelve million, eight hundred twenty-nine thousand, nine hundred forty-five".