858009442873 has 4 divisors (see below), whose sum is σ = 936010301328. Its totient is φ = 780008584420.

The previous prime is 858009442859. The next prime is 858009442879. The reversal of 858009442873 is 378244900858.

It is a happy number.

858009442873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 858009442873 - 2⁵ = 858009442841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858009442879) 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, 39000429211 + ... + 39000429232.

It is an arithmetic number, because the mean of its divisors is an integer number (234002575332).

Almost surely, 2^858009442873 is an apocalyptic number.

It is an amenable number.

858009442873 is a deficient number, since it is larger than the sum of its proper divisors (78000858455).

858009442873 is a wasteful number, since it uses less digits than its factorization.

858009442873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78000858454.

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 858009442873 in words is "eight hundred fifty-eight billion, nine million, four hundred forty-two thousand, eight hundred seventy-three".