8649400273 has 2 divisors, whose sum is σ = 8649400274. Its totient is φ = 8649400272.

The previous prime is 8649400247. The next prime is 8649400321. The reversal of 8649400273 is 3720049468.

8649400273 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., 8037481104 + 611919169 = 89652^2 + 24737^2 .

It is a cyclic number.

It is not a de Polignac number, because 8649400273 - 2²⁹ = 8112529361 is a prime.

It is not a weakly prime, because it can be changed into another prime (8649400223) 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, 4324700136 + 4324700137.

It is an arithmetic number, because the mean of its divisors is an integer number (4324700137).

Almost surely, 2^8649400273 is an apocalyptic number.

It is an amenable number.

8649400273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8649400273 is an equidigital number, since it uses as much as digits as its factorization.

8649400273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 8649400273 is about 93002.1519804784. The cubic root of 8649400273 is about 2052.7150440991.

The spelling of 8649400273 in words is "eight billion, six hundred forty-nine million, four hundred thousand, two hundred seventy-three".