789664916 has 6 divisors (see below), whose sum is σ = 1381913610. Its totient is φ = 394832456.

The previous prime is 789664913. The next prime is 789664921. The reversal of 789664916 is 619466987.

It can be written as a sum of positive squares in only one way, i.e., 785680900 + 3984016 = 28030^2 + 1996^2 .

It is a super-2 number, since 2×789664916² = 1247141359122574112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789664913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98708111 + ... + 98708118.

It is an arithmetic number, because the mean of its divisors is an integer number (230318935).

Almost surely, 2^789664916 is an apocalyptic number.

It is an amenable number.

789664916 is a deficient number, since it is larger than the sum of its proper divisors (592248694).

789664916 is a wasteful number, since it uses less digits than its factorization.

789664916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197416233 (or 197416231 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The square root of 789664916 is about 28100.9771360357. The cubic root of 789664916 is about 924.3028264124.

The spelling of 789664916 in words is "seven hundred eighty-nine million, six hundred sixty-four thousand, nine hundred sixteen".