39216078947 has 2 divisors, whose sum is σ = 39216078948. Its totient is φ = 39216078946.

The previous prime is 39216078929. The next prime is 39216078949. The reversal of 39216078947 is 74987061293.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39216078947 - 2¹² = 39216074851 is a prime.

Together with 39216078949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39216078892 and 39216078901.

It is not a weakly prime, because it can be changed into another prime (39216078949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19608039473 + 19608039474.

It is an arithmetic number, because the mean of its divisors is an integer number (19608039474).

Almost surely, 2^39216078947 is an apocalyptic number.

39216078947 is a deficient number, since it is larger than the sum of its proper divisors (1).

39216078947 is an equidigital number, since it uses as much as digits as its factorization.

39216078947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 39216078947 in words is "thirty-nine billion, two hundred sixteen million, seventy-eight thousand, nine hundred forty-seven".