855315858 has 16 divisors (see below), whose sum is σ = 1785007296. Its totient is φ = 272709360.

The previous prime is 855315827. The next prime is 855315863. The reversal of 855315858 is 858513558.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098833 + ... + 3099108.

It is an arithmetic number, because the mean of its divisors is an integer number (111562956).

Almost surely, 2^855315858 is an apocalyptic number.

855315858 is an abundant number, since it is smaller than the sum of its proper divisors (929691438).

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

855315858 is a wasteful number, since it uses less digits than its factorization.

855315858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197969.

The product of its digits is 960000, while the sum is 48.

The square root of 855315858 is about 29245.7835935370. The cubic root of 855315858 is about 949.2388577392.

The spelling of 855315858 in words is "eight hundred fifty-five million, three hundred fifteen thousand, eight hundred fifty-eight".