855039 has 8 divisors (see below), whose sum is σ = 1145520. Its totient is φ = 567296.

The previous prime is 855031. The next prime is 855059. The reversal of 855039 is 930558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855039 - 2³ = 855031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 854997 and 855015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (143190).

2⁸⁵⁵⁰³⁹ is an apocalyptic number.

855039 is a deficient number, since it is larger than the sum of its proper divisors (290481).

855039 is a wasteful number, since it uses less digits than its factorization.

855039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 855039 is about 924.6831889896. The cubic root of 855039 is about 94.9136426678.

The spelling of 855039 in words is "eight hundred fifty-five thousand, thirty-nine".