858354993 has 6 divisors (see below), whose sum is σ = 1239846114. Its totient is φ = 572236656.

The previous prime is 858354989. The next prime is 858355093. The reversal of 858354993 is 399453858.

858354993 is a `hidden beast` number, since 8 + 5 + 8 + 3 + 549 + 93 = 666.

858354993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 846984609 + 11370384 = 29103^2 + 3372^2 .

It is not a de Polignac number, because 858354993 - 2² = 858354989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (858354983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47686380 + ... + 47686397.

It is an arithmetic number, because the mean of its divisors is an integer number (206641019).

Almost surely, 2^858354993 is an apocalyptic number.

It is an amenable number.

858354993 is a deficient number, since it is larger than the sum of its proper divisors (381491121).

858354993 is a wasteful number, since it uses less digits than its factorization.

858354993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95372783 (or 95372780 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 858354993 is about 29297.6960356954. The cubic root of 858354993 is about 950.3618171208.

The spelling of 858354993 in words is "eight hundred fifty-eight million, three hundred fifty-four thousand, nine hundred ninety-three".