12319649 has 2 divisors, whose sum is σ = 12319650. Its totient is φ = 12319648.

The previous prime is 12319627. The next prime is 12319661. The reversal of 12319649 is 94691321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9412624 + 2907025 = 3068^2 + 1705^2 .

It is an emirp because it is prime and its reverse (94691321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12319649 - 2¹⁶ = 12254113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12319609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159824 + 6159825.

It is an arithmetic number, because the mean of its divisors is an integer number (6159825).

Almost surely, 2^12319649 is an apocalyptic number.

It is an amenable number.

12319649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12319649 is an equidigital number, since it uses as much as digits as its factorization.

12319649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 12319649 is about 3509.9357543978. The cubic root of 12319649 is about 230.9578766667.

The spelling of 12319649 in words is "twelve million, three hundred nineteen thousand, six hundred forty-nine".