12919117 has 2 divisors, whose sum is σ = 12919118. Its totient is φ = 12919116.

The previous prime is 12919111. The next prime is 12919163. The reversal of 12919117 is 71191921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7986276 + 4932841 = 2826^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 12919117 - 2¹⁹ = 12394829 is a prime.

It is a Chen prime.

It is equal to p₈₄₄₃₄₈ and since 12919117 and 844348 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 (12919111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459558 + 6459559.

It is an arithmetic number, because the mean of its divisors is an integer number (6459559).

Almost surely, 2^12919117 is an apocalyptic number.

It is an amenable number.

12919117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919117 is an equidigital number, since it uses as much as digits as its factorization.

12919117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 31.

The square root of 12919117 is about 3594.3173204379. The cubic root of 12919117 is about 234.6448051888.

The spelling of 12919117 in words is "twelve million, nine hundred nineteen thousand, one hundred seventeen".