849449782336 has 63 divisors (see below), whose sum is σ = 1762453336021. Its totient is φ = 406177485824.

The previous prime is 849449782309. The next prime is 849449782367. The reversal of 849449782336 is 633287944948.

The square root of 849449782336 is 921656.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 400871324736 + 448578457600 = 633144^2 + 669760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 169582200 + ... + 169587208.

Almost surely, 2^849449782336 is an apocalyptic number.

849449782336 is the 921656-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849449782336

849449782336 is an abundant number, since it is smaller than the sum of its proper divisors (913003553685).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849449782336 is an frugal number, since it uses more digits than its factorization.

849449782336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10076 (or 5034 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 67.

The spelling of 849449782336 in words is "eight hundred forty-nine billion, four hundred forty-nine million, seven hundred eighty-two thousand, three hundred thirty-six".