12971829 has 8 divisors (see below), whose sum is σ = 18626272. Its totient is φ = 7982640.

The previous prime is 12971797. The next prime is 12971831. The reversal of 12971829 is 92817921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12971829 - 2⁵ = 12971797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 332611 = 12971829 / (1 + 2 + 9 + 7 + 1 + 8 + 2 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12971929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166267 + ... + 166344.

It is an arithmetic number, because the mean of its divisors is an integer number (2328284).

Almost surely, 2^12971829 is an apocalyptic number.

It is an amenable number.

12971829 is a deficient number, since it is larger than the sum of its proper divisors (5654443).

12971829 is a wasteful number, since it uses less digits than its factorization.

12971829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332627.

The product of its digits is 18144, while the sum is 39.

The square root of 12971829 is about 3601.6425419522. The cubic root of 12971829 is about 234.9635011974.

The spelling of 12971829 in words is "twelve million, nine hundred seventy-one thousand, eight hundred twenty-nine".