8646489394 has 8 divisors (see below), whose sum is σ = 12980290860. Its totient is φ = 4319725776.

The previous prime is 8646489367. The next prime is 8646489409. The reversal of 8646489394 is 4939846468.

8646489394 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 2 ways, for example, as 7308027169 + 1338462225 = 85487^2 + 36585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1756389 + ... + 1761304.

Almost surely, 2^8646489394 is an apocalyptic number.

8646489394 is a deficient number, since it is larger than the sum of its proper divisors (4333801466).

8646489394 is a wasteful number, since it uses less digits than its factorization.

8646489394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518924.

The product of its digits is 35831808, while the sum is 61.

The square root of 8646489394 is about 92986.5011386061. The cubic root of 8646489394 is about 2052.4847439106.

The spelling of 8646489394 in words is "eight billion, six hundred forty-six million, four hundred eighty-nine thousand, three hundred ninety-four".