789480781 has 2 divisors, whose sum is σ = 789480782. Its totient is φ = 789480780.

The previous prime is 789480767. The next prime is 789480793. The reversal of 789480781 is 187084987.

789480781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455139556 + 334341225 = 21334^2 + 18285^2 .

It is a cyclic number.

It is not a de Polignac number, because 789480781 - 2⁵ = 789480749 is a prime.

It is a super-2 number, since 2×789480781² = 1246559807136739922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789480701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394740390 + 394740391.

It is an arithmetic number, because the mean of its divisors is an integer number (394740391).

Almost surely, 2^789480781 is an apocalyptic number.

It is an amenable number.

789480781 is a deficient number, since it is larger than the sum of its proper divisors (1).

789480781 is an equidigital number, since it uses as much as digits as its factorization.

789480781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 789480781 is about 28097.7006354613. The cubic root of 789480781 is about 924.2309774850.

The spelling of 789480781 in words is "seven hundred eighty-nine million, four hundred eighty thousand, seven hundred eighty-one".