12958117 has 2 divisors, whose sum is σ = 12958118. Its totient is φ = 12958116.

The previous prime is 12958109. The next prime is 12958123. The reversal of 12958117 is 71185921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12173121 + 784996 = 3489^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 12958117 - 2³ = 12958109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12958717) by changing a digit.

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 as a sum of consecutive naturals, namely, 6479058 + 6479059.

It is an arithmetic number, because the mean of its divisors is an integer number (6479059).

Almost surely, 2^12958117 is an apocalyptic number.

It is an amenable number.

12958117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12958117 is an equidigital number, since it uses as much as digits as its factorization.

12958117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 34.

The square root of 12958117 is about 3599.7384627220. The cubic root of 12958117 is about 234.8806818454.

The spelling of 12958117 in words is "twelve million, nine hundred fifty-eight thousand, one hundred seventeen".