12973109 has 2 divisors, whose sum is σ = 12973110. Its totient is φ = 12973108.

The previous prime is 12973099. The next prime is 12973111. The reversal of 12973109 is 90137921.

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., 6708100 + 6265009 = 2590^2 + 2503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12973109 is a prime.

It is a super-3 number, since 3×12973109³ (a number of 22 digits) contains 333 as substring.

Together with 12973111, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₄₇₆₀₇ and since 12973109 and 847607 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12973139) 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, 6486554 + 6486555.

It is an arithmetic number, because the mean of its divisors is an integer number (6486555).

Almost surely, 2^12973109 is an apocalyptic number.

It is an amenable number.

12973109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12973109 is an equidigital number, since it uses as much as digits as its factorization.

12973109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12973109 is about 3601.8202342704. The cubic root of 12973109 is about 234.9712293132.

The spelling of 12973109 in words is "twelve million, nine hundred seventy-three thousand, one hundred nine".