858238494 has 8 divisors (see below), whose sum is σ = 1716477000. Its totient is φ = 286079496.

The previous prime is 858238439. The next prime is 858238501. The reversal of 858238494 is 494832858.

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

858238494 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 71519869 + ... + 71519880.

It is an arithmetic number, because the mean of its divisors is an integer number (214559625).

Almost surely, 2^858238494 is an apocalyptic number.

858238494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

858238494 is a wasteful number, since it uses less digits than its factorization.

858238494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143039754.

The product of its digits is 2211840, while the sum is 51.

The square root of 858238494 is about 29295.7077743481. The cubic root of 858238494 is about 950.3188196774.

The spelling of 858238494 in words is "eight hundred fifty-eight million, two hundred thirty-eight thousand, four hundred ninety-four".