789855 has 16 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 382880.

The previous prime is 789851. The next prime is 789857. The reversal of 789855 is 558987.

It is not a de Polignac number, because 789855 - 2² = 789851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789851) 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 in 15 ways as a sum of consecutive naturals, for example, 2229 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2⁷⁸⁹⁸⁵⁵ is an apocalyptic number.

789855 is a deficient number, since it is larger than the sum of its proper divisors (589089).

789855 is a wasteful number, since it uses less digits than its factorization.

789855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806.

The product of its digits is 100800, while the sum is 42.

The square root of 789855 is about 888.7378691155. The cubic root of 789855 is about 92.4376984906.

The spelling of 789855 in words is "seven hundred eighty-nine thousand, eight hundred fifty-five".