858984955 has 8 divisors (see below), whose sum is σ = 1041409152. Its totient is φ = 680103168.

The previous prime is 858984949. The next prime is 858984977. The reversal of 858984955 is 559489858.

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 858984955 - 2⁵ = 858984923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 858984893 and 858984902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885067 + ... + 886036.

It is an arithmetic number, because the mean of its divisors is an integer number (130176144).

Almost surely, 2^858984955 is an apocalyptic number.

858984955 is a deficient number, since it is larger than the sum of its proper divisors (182424197).

858984955 is a wasteful number, since it uses less digits than its factorization.

858984955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771205.

The product of its digits is 20736000, while the sum is 61.

The square root of 858984955 is about 29308.4451139940. The cubic root of 858984955 is about 950.5942560814.

The spelling of 858984955 in words is "eight hundred fifty-eight million, nine hundred eighty-four thousand, nine hundred fifty-five".