789744789 has 16 divisors (see below), whose sum is σ = 1170624000. Its totient is φ = 526212288.

The previous prime is 789744779. The next prime is 789744797. The reversal of 789744789 is 987447987.

It is a happy number.

789744789 is a `hidden beast` number, since 78 + 97 + 4 + 478 + 9 = 666.

It is not a de Polignac number, because 789744789 - 2⁴ = 789744773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789744719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51037 + ... + 64685.

It is an arithmetic number, because the mean of its divisors is an integer number (73164000).

Almost surely, 2^789744789 is an apocalyptic number.

It is an amenable number.

789744789 is a deficient number, since it is larger than the sum of its proper divisors (380879211).

789744789 is a wasteful number, since it uses less digits than its factorization.

789744789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15801 (or 15795 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 789744789 is about 28102.3982784388. The cubic root of 789744789 is about 924.3339891453. Note that the first 3 decimals are identical.

The spelling of 789744789 in words is "seven hundred eighty-nine million, seven hundred forty-four thousand, seven hundred eighty-nine".