12969919 has 2 divisors, whose sum is σ = 12969920. Its totient is φ = 12969918.

The previous prime is 12969893. The next prime is 12969937. The reversal of 12969919 is 91996921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12969919 - 2¹³ = 12961727 is a prime.

It is a super-2 number, since 2×12969919² = 336437597733122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12969949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6484959 + 6484960.

It is an arithmetic number, because the mean of its divisors is an integer number (6484960).

Almost surely, 2^12969919 is an apocalyptic number.

12969919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12969919 is an equidigital number, since it uses as much as digits as its factorization.

12969919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 46.

The square root of 12969919 is about 3601.3773753940. The cubic root of 12969919 is about 234.9519684542.

The spelling of 12969919 in words is "twelve million, nine hundred sixty-nine thousand, nine hundred nineteen".