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12919 is a prime number
BaseRepresentation
bin11001001110111
3122201111
43021313
5403134
6135451
752444
oct31167
918644
1012919
119785
127587
135b5a
1449cb
153c64
hex3277

12919 has 2 divisors, whose sum is σ = 12920. Its totient is φ = 12918.

The previous prime is 12917. The next prime is 12923. The reversal of 12919 is 91921.

It is a weak prime.

It is an emirp because it is prime and its reverse (91921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12919 - 21 = 12917 is a prime.

It is a super-2 number, since 2×129192 = 333801122, which contains 22 as substring.

Together with 12917, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459 + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (6460).

212919 is an apocalyptic number.

12919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919 is an equidigital number, since it uses as much as digits as its factorization.

12919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 22.

The square root of 12919 is about 113.6617789760. The cubic root of 12919 is about 23.4644096845.

The spelling of 12919 in words is "twelve thousand, nine hundred nineteen".