12912619 has 2 divisors, whose sum is σ = 12912620. Its totient is φ = 12912618.

The previous prime is 12912589. The next prime is 12912649. The reversal of 12912619 is 91621921.

It is a balanced prime because it is at equal distance from previous prime (12912589) and next prime (12912649).

It is a cyclic number.

It is not a de Polignac number, because 12912619 - 2¹⁵ = 12879851 is a prime.

It is a super-2 number, since 2×12912619² = 333471458878322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12912649) 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, 6456309 + 6456310.

It is an arithmetic number, because the mean of its divisors is an integer number (6456310).

Almost surely, 2^12912619 is an apocalyptic number.

12912619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912619 is an equidigital number, since it uses as much as digits as its factorization.

12912619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 12912619 is about 3593.4132798775. The cubic root of 12912619 is about 234.6054583911.

It can be divided in two parts, 12912 and 619, that added together give a palindrome (13531).

The spelling of 12912619 in words is "twelve million, nine hundred twelve thousand, six hundred nineteen".