8646489442 has 16 divisors (see below), whose sum is σ = 13753471032. Its totient is φ = 4062769920.

The previous prime is 8646489437. The next prime is 8646489443. The reversal of 8646489442 is 2449846468.

8646489442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8237196081 + 409293361 = 90759^2 + 20231^2 .

It is not an unprimeable number, because it can be changed into a prime (8646489443) 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 in 7 ways as a sum of consecutive naturals, for example, 169893 + ... + 214840.

Almost surely, 2^8646489442 is an apocalyptic number.

8646489442 is a deficient number, since it is larger than the sum of its proper divisors (5106981590).

8646489442 is a wasteful number, since it uses less digits than its factorization.

8646489442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385413.

The product of its digits is 10616832, while the sum is 55.

The square root of 8646489442 is about 92986.5013967081. The cubic root of 8646489442 is about 2052.4847477086.

The spelling of 8646489442 in words is "eight billion, six hundred forty-six million, four hundred eighty-nine thousand, four hundred forty-two".