2939129856 has 156 divisors (see below), whose sum is σ = 9144334108. Its totient is φ = 904200192.

The previous prime is 2939129839. The next prime is 2939129861. The reversal of 2939129856 is 6589219392.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1784217600 + 1154912256 = 42240^2 + 33984^2 .

It is a tau number, because it is divible by the number of its divisors (156).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476166 + ... + 482298.

Almost surely, 2^2939129856 is an apocalyptic number.

2939129856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2939129856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4572167054).

2939129856 is an abundant number, since it is smaller than the sum of its proper divisors (6205204252).

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

2939129856 is a wasteful number, since it uses less digits than its factorization.

2939129856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176 (or 6151 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 2939129856 is about 54213.7423168702. The cubic root of 2939129856 is about 1432.4284060964.

The spelling of 2939129856 in words is "two billion, nine hundred thirty-nine million, one hundred twenty-nine thousand, eight hundred fifty-six".