2447842457 has 2 divisors, whose sum is σ = 2447842458. Its totient is φ = 2447842456.

The previous prime is 2447842451. The next prime is 2447842513. The reversal of 2447842457 is 7542487442.

2447842457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2443918096 + 3924361 = 49436^2 + 1981^2 .

It is a cyclic number.

It is not a de Polignac number, because 2447842457 - 2²⁸ = 2179407001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2447842451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223921228 + 1223921229.

It is an arithmetic number, because the mean of its divisors is an integer number (1223921229).

Almost surely, 2^2447842457 is an apocalyptic number.

It is an amenable number.

2447842457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447842457 is an equidigital number, since it uses as much as digits as its factorization.

2447842457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2007040, while the sum is 47.

The square root of 2447842457 is about 49475.6754072140. The cubic root of 2447842457 is about 1347.7039080659.

The spelling of 2447842457 in words is "two billion, four hundred forty-seven million, eight hundred forty-two thousand, four hundred fifty-seven".