12958217 has 4 divisors (see below), whose sum is σ = 13376256. Its totient is φ = 12540180.

The previous prime is 12958201. The next prime is 12958237. The reversal of 12958217 is 71285921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12958217 - 2⁴ = 12958201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12958237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208973 + ... + 209034.

It is an arithmetic number, because the mean of its divisors is an integer number (3344064).

Almost surely, 2^12958217 is an apocalyptic number.

It is an amenable number.

12958217 is a deficient number, since it is larger than the sum of its proper divisors (418039).

12958217 is an equidigital number, since it uses as much as digits as its factorization.

12958217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418038.

The product of its digits is 10080, while the sum is 35.

The square root of 12958217 is about 3599.7523525932. The cubic root of 12958217 is about 234.8812860486.

The spelling of 12958217 in words is "twelve million, nine hundred fifty-eight thousand, two hundred seventeen".