2447809993 has 2 divisors, whose sum is σ = 2447809994. Its totient is φ = 2447809992.

The previous prime is 2447809951. The next prime is 2447809997. The reversal of 2447809993 is 3999087442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2103781689 + 344028304 = 45867^2 + 18548^2 .

It is a cyclic number.

It is not a de Polignac number, because 2447809993 - 2¹³ = 2447801801 is a prime.

It is not a weakly prime, because it can be changed into another prime (2447809997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223904996 + 1223904997.

It is an arithmetic number, because the mean of its divisors is an integer number (1223904997).

Almost surely, 2^2447809993 is an apocalyptic number.

It is an amenable number.

2447809993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447809993 is an equidigital number, since it uses as much as digits as its factorization.

2447809993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The square root of 2447809993 is about 49475.3473257136. The cubic root of 2447809993 is about 1347.6979501589.

The spelling of 2447809993 in words is "two billion, four hundred forty-seven million, eight hundred nine thousand, nine hundred ninety-three".