855000079 has 2 divisors, whose sum is σ = 855000080. Its totient is φ = 855000078.

The previous prime is 855000071. The next prime is 855000109. The reversal of 855000079 is 970000558.

855000079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855000079 - 2³ = 855000071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427500039 + 427500040.

It is an arithmetic number, because the mean of its divisors is an integer number (427500040).

Almost surely, 2^855000079 is an apocalyptic number.

855000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

855000079 is an equidigital number, since it uses as much as digits as its factorization.

855000079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 855000079 is about 29240.3843852984. The cubic root of 855000079 is about 949.1220250351.

The spelling of 855000079 in words is "eight hundred fifty-five million, seventy-nine", and thus it is an aban number.