728813779 has 2 divisors, whose sum is σ = 728813780. Its totient is φ = 728813778.

The previous prime is 728813773. The next prime is 728813803. The reversal of 728813779 is 977318827.

728813779 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 728813779 - 2⁵ = 728813747 is a prime.

It is not a weakly prime, because it can be changed into another prime (728813773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364406889 + 364406890.

It is an arithmetic number, because the mean of its divisors is an integer number (364406890).

Almost surely, 2^728813779 is an apocalyptic number.

728813779 is a deficient number, since it is larger than the sum of its proper divisors (1).

728813779 is an equidigital number, since it uses as much as digits as its factorization.

728813779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 52.

The square root of 728813779 is about 26996.5512427051. The cubic root of 728813779 is about 899.9233593174.

The spelling of 728813779 in words is "seven hundred twenty-eight million, eight hundred thirteen thousand, seven hundred seventy-nine".