8056729391 has 16 divisors (see below), whose sum is σ = 8852811360. Its totient is φ = 7304618880.

The previous prime is 8056729379. The next prime is 8056729481. The reversal of 8056729391 is 1939276508.

It is a cyclic number.

It is not a de Polignac number, because 8056729391 - 2²² = 8052535087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8056729091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51056 + ... + 136821.

It is an arithmetic number, because the mean of its divisors is an integer number (553300710).

Almost surely, 2^8056729391 is an apocalyptic number.

8056729391 is a deficient number, since it is larger than the sum of its proper divisors (796081969).

8056729391 is a wasteful number, since it uses less digits than its factorization.

8056729391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187994.

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

The square root of 8056729391 is about 89759.2858204654. The cubic root of 8056729391 is about 2004.7163186767.

The spelling of 8056729391 in words is "eight billion, fifty-six million, seven hundred twenty-nine thousand, three hundred ninety-one".