12958997 has 2 divisors, whose sum is σ = 12958998. Its totient is φ = 12958996.

The previous prime is 12958973. The next prime is 12958999. The reversal of 12958997 is 79985921.

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., 11015761 + 1943236 = 3319^2 + 1394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12958997 is a prime.

Together with 12958999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12958999) 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, 6479498 + 6479499.

It is an arithmetic number, because the mean of its divisors is an integer number (6479499).

Almost surely, 2^12958997 is an apocalyptic number.

It is an amenable number.

12958997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12958997 is an equidigital number, since it uses as much as digits as its factorization.

12958997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 50.

The square root of 12958997 is about 3599.8606917491. The cubic root of 12958997 is about 234.8859987270.

The spelling of 12958997 in words is "twelve million, nine hundred fifty-eight thousand, nine hundred ninety-seven".