842389673 has 2 divisors, whose sum is σ = 842389674. Its totient is φ = 842389672.

The previous prime is 842389657. The next prime is 842389741. The reversal of 842389673 is 376983248.

842389673 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., 632371609 + 210018064 = 25147^2 + 14492^2 .

It is a cyclic number.

It is not a de Polignac number, because 842389673 - 2⁴ = 842389657 is a prime.

It is a super-3 number, since 3×842389673³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (842380673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421194836 + 421194837.

It is an arithmetic number, because the mean of its divisors is an integer number (421194837).

Almost surely, 2^842389673 is an apocalyptic number.

It is an amenable number.

842389673 is a deficient number, since it is larger than the sum of its proper divisors (1).

842389673 is an equidigital number, since it uses as much as digits as its factorization.

842389673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The square root of 842389673 is about 29023.9499896206. The cubic root of 842389673 is about 944.4326906737.

The spelling of 842389673 in words is "eight hundred forty-two million, three hundred eighty-nine thousand, six hundred seventy-three".