56809739 has 8 divisors (see below), whose sum is σ = 65011968. Its totient is φ = 48629160.

The previous prime is 56809729. The next prime is 56809757. The reversal of 56809739 is 93790865.

56809739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56809739 - 2¹² = 56805643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56809693 and 56809702.

It is not an unprimeable number, because it can be changed into a prime (56809729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 674 + ... + 10680.

It is an arithmetic number, because the mean of its divisors is an integer number (8126496).

Almost surely, 2^56809739 is an apocalyptic number.

56809739 is a deficient number, since it is larger than the sum of its proper divisors (8202229).

56809739 is a wasteful number, since it uses less digits than its factorization.

56809739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10825.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 56809739 is about 7537.2235604366. The cubic root of 56809739 is about 384.4214371728.

The spelling of 56809739 in words is "fifty-six million, eight hundred nine thousand, seven hundred thirty-nine".