789447697 has 2 divisors, whose sum is σ = 789447698. Its totient is φ = 789447696.

The previous prime is 789447689. The next prime is 789447713. The reversal of 789447697 is 796744987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788261776 + 1185921 = 28076^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 789447697 - 2³ = 789447689 is a prime.

It is not a weakly prime, because it can be changed into another prime (789447647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394723848 + 394723849.

It is an arithmetic number, because the mean of its divisors is an integer number (394723849).

Almost surely, 2^789447697 is an apocalyptic number.

It is an amenable number.

789447697 is a deficient number, since it is larger than the sum of its proper divisors (1).

789447697 is an equidigital number, since it uses as much as digits as its factorization.

789447697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21337344, while the sum is 61.

The square root of 789447697 is about 28097.1118978446. Note that the first 3 decimals coincide. The cubic root of 789447697 is about 924.2180670231.

The spelling of 789447697 in words is "seven hundred eighty-nine million, four hundred forty-seven thousand, six hundred ninety-seven".