56806439 has 6 divisors (see below), whose sum is σ = 57789120. Its totient is φ = 55840196.

The previous prime is 56806423. The next prime is 56806441. The reversal of 56806439 is 93460865.

56806439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56806439 - 2⁴ = 56806423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56806396 and 56806405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56806499) 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 5 ways as a sum of consecutive naturals, for example, 4679 + ... + 11640.

It is an arithmetic number, because the mean of its divisors is an integer number (9631520).

Almost surely, 2^56806439 is an apocalyptic number.

56806439 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

56806439 is a deficient number, since it is larger than the sum of its proper divisors (982681).

56806439 is an equidigital number, since it uses as much as digits as its factorization.

56806439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16437 (or 16378 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 56806439 is about 7537.0046437560. The cubic root of 56806439 is about 384.4139935236.

It can be divided in two parts, 568064 and 39, that multiplied together give a triangular number (22154496 = T₆₆₅₆).

The spelling of 56806439 in words is "fifty-six million, eight hundred six thousand, four hundred thirty-nine".