848209686289 has 27 divisors (see below), whose sum is σ = 1011660806001. Its totient is φ = 709083231360.

The previous prime is 848209686287. The next prime is 848209686377. The reversal of 848209686289 is 982686902848.

The square root of 848209686289 is 920983.

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

It can be written as a sum of positive squares in 4 ways, for example, as 195216399889 + 652993286400 = 441833^2 + 808080^2 .

It is not a de Polignac number, because 848209686289 - 2¹ = 848209686287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (848209686287) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 264320517 + ... + 264323725.

Almost surely, 2^848209686289 is an apocalyptic number.

848209686289 is the 920983-rd square number.

848209686289 is the 460492-nd centered octagonal number.

It is an amenable number.

848209686289 is a deficient number, since it is larger than the sum of its proper divisors (163451119712).

848209686289 is an frugal number, since it uses more digits than its factorization.

848209686289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514 (or 3257 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 70.

The spelling of 848209686289 in words is "eight hundred forty-eight billion, two hundred nine million, six hundred eighty-six thousand, two hundred eighty-nine".