839779056 has 160 divisors (see below), whose sum is σ = 2615457600. Its totient is φ = 256942080.

The previous prime is 839779019. The next prime is 839779063. The reversal of 839779056 is 650977938.

It is a super-2 number, since 2×839779056² = 1410457725792502272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 839778993 and 839779011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299710 + ... + 302498.

It is an arithmetic number, because the mean of its divisors is an integer number (16346610).

Almost surely, 2^839779056 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 839779056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307728800).

839779056 is an abundant number, since it is smaller than the sum of its proper divisors (1775678544).

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

839779056 is a wasteful number, since it uses less digits than its factorization.

839779056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 839779056 is about 28978.9415955794. The cubic root of 839779056 is about 943.4560629220.

The spelling of 839779056 in words is "eight hundred thirty-nine million, seven hundred seventy-nine thousand, fifty-six".