12434647439 has 2 divisors, whose sum is σ = 12434647440. Its totient is φ = 12434647438.

The previous prime is 12434647427. The next prime is 12434647447. The reversal of 12434647439 is 93474643421.

It is a strong prime.

It is an emirp because it is prime and its reverse (93474643421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12434647439 - 2¹² = 12434643343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12434647393 and 12434647402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12434647469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217323719 + 6217323720.

It is an arithmetic number, because the mean of its divisors is an integer number (6217323720).

Almost surely, 2^12434647439 is an apocalyptic number.

12434647439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434647439 is an equidigital number, since it uses as much as digits as its factorization.

12434647439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 47.

The spelling of 12434647439 in words is "twelve billion, four hundred thirty-four million, six hundred forty-seven thousand, four hundred thirty-nine".