2808942047 has 2 divisors, whose sum is σ = 2808942048. Its totient is φ = 2808942046.

The previous prime is 2808942013. The next prime is 2808942049. The reversal of 2808942047 is 7402498082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2808942047 - 2⁸ = 2808941791 is a prime.

Together with 2808942049, 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 = 2808941989 and 2808942007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808942049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404471023 + 1404471024.

It is an arithmetic number, because the mean of its divisors is an integer number (1404471024).

Almost surely, 2^2808942047 is an apocalyptic number.

2808942047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808942047 is an equidigital number, since it uses as much as digits as its factorization.

2808942047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 2808942047 is about 52999.4532707650. The cubic root of 2808942047 is about 1410.9585633537.

The spelling of 2808942047 in words is "two billion, eight hundred eight million, nine hundred forty-two thousand, forty-seven".