56789899 has 2 divisors, whose sum is σ = 56789900. Its totient is φ = 56789898.

The previous prime is 56789897. The next prime is 56789903. The reversal of 56789899 is 99898765.

56789899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56789899 - 2¹ = 56789897 is a prime.

Together with 56789897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56789897) 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 as a sum of consecutive naturals, namely, 28394949 + 28394950.

It is an arithmetic number, because the mean of its divisors is an integer number (28394950).

Almost surely, 2^56789899 is an apocalyptic number.

56789899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56789899 is an equidigital number, since it uses as much as digits as its factorization.

56789899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 61.

The square root of 56789899 is about 7535.9073110011. The cubic root of 56789899 is about 384.3766807074.

The spelling of 56789899 in words is "fifty-six million, seven hundred eighty-nine thousand, eight hundred ninety-nine".