839849443489 has 27 divisors (see below), whose sum is σ = 988740379251. Its totient is φ = 711298637280.

The previous prime is 839849443441. The next prime is 839849443493. The reversal of 839849443489 is 984344948938.

The square root of 839849443489 is 916433.

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., 161268905889 + 678580537600 = 401583^2 + 823760^2 .

It is not a de Polignac number, because 839849443489 - 2¹¹ = 839849441441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (839849443789) 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 26 ways as a sum of consecutive naturals, for example, 570937024 + ... + 570938494.

Almost surely, 2^839849443489 is an apocalyptic number.

839849443489 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

839849443489 is the 916433-rd square number.

839849443489 is the 458217-th centered octagonal number.

It is an amenable number.

839849443489 is a deficient number, since it is larger than the sum of its proper divisors (148890935762).

839849443489 is an frugal number, since it uses more digits than its factorization.

839849443489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134 (or 1567 counting only the distinct ones).

The product of its digits is 859963392, while the sum is 73.

The spelling of 839849443489 in words is "eight hundred thirty-nine billion, eight hundred forty-nine million, four hundred forty-three thousand, four hundred eighty-nine".