8440085273 has 2 divisors, whose sum is σ = 8440085274. Its totient is φ = 8440085272.

The previous prime is 8440085263. The next prime is 8440085347. The reversal of 8440085273 is 3725800448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7897521424 + 542563849 = 88868^2 + 23293^2 .

It is a cyclic number.

It is not a de Polignac number, because 8440085273 - 2¹⁰ = 8440084249 is a prime.

It is a super-2 number, since 2×8440085273² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8440085273.

It is not a weakly prime, because it can be changed into another prime (8440085263) 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, 4220042636 + 4220042637.

It is an arithmetic number, because the mean of its divisors is an integer number (4220042637).

Almost surely, 2^8440085273 is an apocalyptic number.

It is an amenable number.

8440085273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8440085273 is an equidigital number, since it uses as much as digits as its factorization.

8440085273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 8440085273 is about 91869.9367203439. The cubic root of 8440085273 is about 2036.0211174527.

The spelling of 8440085273 in words is "eight billion, four hundred forty million, eighty-five thousand, two hundred seventy-three".