855799390 has 8 divisors (see below), whose sum is σ = 1540438920. Its totient is φ = 342319752.

The previous prime is 855799379. The next prime is 855799391. The reversal of 855799390 is 93997558.

855799390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855799391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42789960 + ... + 42789979.

It is an arithmetic number, because the mean of its divisors is an integer number (192554865).

Almost surely, 2^855799390 is an apocalyptic number.

855799390 is a deficient number, since it is larger than the sum of its proper divisors (684639530).

855799390 is a wasteful number, since it uses less digits than its factorization.

855799390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85579946.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The square root of 855799390 is about 29254.0491214464. The cubic root of 855799390 is about 949.4177004025.

The spelling of 855799390 in words is "eight hundred fifty-five million, seven hundred ninety-nine thousand, three hundred ninety".