789821946 has 24 divisors (see below), whose sum is σ = 1712670804. Its totient is φ = 263060160.

The previous prime is 789821911. The next prime is 789821947. The reversal of 789821946 is 649128987.

It can be written as a sum of positive squares in 2 ways, for example, as 739568025 + 50253921 = 27195^2 + 7089^2 .

It is a junction number, because it is equal to n+sod(n) for n = 789821892 and 789821901.

It is not an unprimeable number, because it can be changed into a prime (789821947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5806 + ... + 40166.

Almost surely, 2^789821946 is an apocalyptic number.

789821946 is an abundant number, since it is smaller than the sum of its proper divisors (922848858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

789821946 is a wasteful number, since it uses less digits than its factorization.

789821946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35646 (or 35643 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 789821946 is about 28103.7710281023. The cubic root of 789821946 is about 924.3640902261.

The spelling of 789821946 in words is "seven hundred eighty-nine million, eight hundred twenty-one thousand, nine hundred forty-six".