12717919 has 8 divisors (see below), whose sum is σ = 13329792. Its totient is φ = 12111000.

The previous prime is 12717917. The next prime is 12717923. The reversal of 12717919 is 91971721.

12717919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12717919 - 2¹ = 12717917 is a prime.

It is a super-2 number, since 2×12717919² = 323490927381122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12717917) 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 in 7 ways as a sum of consecutive naturals, for example, 4672 + ... + 6874.

It is an arithmetic number, because the mean of its divisors is an integer number (1666224).

Almost surely, 2^12717919 is an apocalyptic number.

12717919 is a deficient number, since it is larger than the sum of its proper divisors (611873).

12717919 is a wasteful number, since it uses less digits than its factorization.

12717919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477.

The product of its digits is 7938, while the sum is 37.

The square root of 12717919 is about 3566.2191463790. The cubic root of 12717919 is about 233.4203333170.

The spelling of 12717919 in words is "twelve million, seven hundred seventeen thousand, nine hundred nineteen".