12972829 has 4 divisors (see below), whose sum is σ = 13323484. Its totient is φ = 12622176.

The previous prime is 12972811. The next prime is 12972833. The reversal of 12972829 is 92827921.

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 11222500 + 1750329 = 3350^2 + 1323^2 .

It is a cyclic number.

It is not a de Polignac number, because 12972829 - 2⁹ = 12972317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12972791 and 12972800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972629) 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, 175272 + ... + 175345.

It is an arithmetic number, because the mean of its divisors is an integer number (3330871).

Almost surely, 2^12972829 is an apocalyptic number.

It is an amenable number.

12972829 is a deficient number, since it is larger than the sum of its proper divisors (350655).

12972829 is an equidigital number, since it uses as much as digits as its factorization.

12972829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350654.

The product of its digits is 36288, while the sum is 40.

The square root of 12972829 is about 3601.7813648249. The cubic root of 12972829 is about 234.9695388313.

The spelling of 12972829 in words is "twelve million, nine hundred seventy-two thousand, eight hundred twenty-nine".