1029739856 has 20 divisors (see below), whose sum is σ = 2000848500. Its totient is φ = 513391872.

The previous prime is 1029739811. The next prime is 1029739871. The reversal of 1029739856 is 6589379201.

It can be written as a sum of positive squares in 2 ways, for example, as 906973456 + 122766400 = 30116^2 + 11080^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 86621 + ... + 97788.

It is an arithmetic number, because the mean of its divisors is an integer number (100042425).

Almost surely, 2^1029739856 is an apocalyptic number.

1029739856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1029739856 is a deficient number, since it is larger than the sum of its proper divisors (971108644).

1029739856 is a wasteful number, since it uses less digits than its factorization.

1029739856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184766 (or 184760 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1029739856 is about 32089.5599221928. The cubic root of 1029739856 is about 1009.8166042856.

The spelling of 1029739856 in words is "one billion, twenty-nine million, seven hundred thirty-nine thousand, eight hundred fifty-six".