789074789 has 2 divisors, whose sum is σ = 789074790. Its totient is φ = 789074788.

The previous prime is 789074779. The next prime is 789074813. The reversal of 789074789 is 987470987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616677889 + 172396900 = 24833^2 + 13130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789074789 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789074779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394537394 + 394537395.

It is an arithmetic number, because the mean of its divisors is an integer number (394537395).

Almost surely, 2^789074789 is an apocalyptic number.

It is an amenable number.

789074789 is a deficient number, since it is larger than the sum of its proper divisors (1).

789074789 is an equidigital number, since it uses as much as digits as its factorization.

789074789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The square root of 789074789 is about 28090.4750582827. The cubic root of 789074789 is about 924.0725211378.

The spelling of 789074789 in words is "seven hundred eighty-nine million, seventy-four thousand, seven hundred eighty-nine".