704849239809 has 243 divisors, whose sum is σ = 1291463580771. Its totient is φ = 369940633920.

The previous prime is 704849239789. The next prime is 704849239817. The reversal of 704849239809 is 908932948407.

The square root of 704849239809 is 839553.

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

704849239809 is a `hidden beast` number, since 70 + 48 + 492 + 39 + 8 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104267639025 + 600581600784 = 322905^2 + 774972^2 .

It is not a de Polignac number, because 704849239809 - 2⁵ = 704849239777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (704849239849) 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 242 ways as a sum of consecutive naturals, for example, 6843196452 + ... + 6843196554.

Almost surely, 2^704849239809 is an apocalyptic number.

704849239809 is the 839553-rd square number.

704849239809 is the 419777-th centered octagonal number.

It is an amenable number.

704849239809 is a deficient number, since it is larger than the sum of its proper divisors (586614340962).

704849239809 is a wasteful number, since it uses less digits than its factorization.

704849239809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 704849239809 in words is "seven hundred four billion, eight hundred forty-nine million, two hundred thirty-nine thousand, eight hundred nine".