12419947 has 2 divisors, whose sum is σ = 12419948. Its totient is φ = 12419946.

The previous prime is 12419929. The next prime is 12419951. The reversal of 12419947 is 74991421.

It is a strong prime.

It is an emirp because it is prime and its reverse (74991421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12419947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12419347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6209973 + 6209974.

It is an arithmetic number, because the mean of its divisors is an integer number (6209974).

Almost surely, 2^12419947 is an apocalyptic number.

12419947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12419947 is an equidigital number, since it uses as much as digits as its factorization.

12419947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 12419947 is about 3524.1945179005. The cubic root of 12419947 is about 231.5829494678.

It can be divided in two parts, 12419 and 947, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 12419947 in words is "twelve million, four hundred nineteen thousand, nine hundred forty-seven".