8340844489 has 2 divisors, whose sum is σ = 8340844490. Its totient is φ = 8340844488.

The previous prime is 8340844451. The next prime is 8340844537. The reversal of 8340844489 is 9844480438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8157702400 + 183142089 = 90320^2 + 13533^2 .

It is a cyclic number.

It is not a de Polignac number, because 8340844489 - 2¹¹ = 8340842441 is a prime.

It is a super-2 number, since 2×8340844489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8340844429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4170422244 + 4170422245.

It is an arithmetic number, because the mean of its divisors is an integer number (4170422245).

Almost surely, 2^8340844489 is an apocalyptic number.

It is an amenable number.

8340844489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340844489 is an equidigital number, since it uses as much as digits as its factorization.

8340844489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3538944, while the sum is 52.

The square root of 8340844489 is about 91328.2239452843. The cubic root of 8340844489 is about 2028.0096071532.

The spelling of 8340844489 in words is "eight billion, three hundred forty million, eight hundred forty-four thousand, four hundred eighty-nine".