8139385296 has 360 divisors, whose sum is σ = 27662229504. Its totient is φ = 2225180160.

The previous prime is 8139385283. The next prime is 8139385301. The reversal of 8139385296 is 6925839318.

8139385296 is a `hidden beast` number, since 81 + 3 + 9 + 38 + 529 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27779326 + ... + 27779618.

Almost surely, 2^8139385296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8139385296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13831114752).

8139385296 is an abundant number, since it is smaller than the sum of its proper divisors (19522844208).

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

8139385296 is a wasteful number, since it uses less digits than its factorization.

8139385296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 463 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 8139385296 is about 90218.5418636324. The cubic root of 8139385296 is about 2011.5486275797.

The spelling of 8139385296 in words is "eight billion, one hundred thirty-nine million, three hundred eighty-five thousand, two hundred ninety-six".