854858921 has 8 divisors (see below), whose sum is σ = 989349120. Its totient is φ = 723460608.

The previous prime is 854858881. The next prime is 854858929. The reversal of 854858921 is 129858458.

854858921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 854858921 - 2⁶ = 854858857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854858921.

It is not an unprimeable number, because it can be changed into a prime (854858929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772376 + ... + 773481.

It is an arithmetic number, because the mean of its divisors is an integer number (123668640).

Almost surely, 2^854858921 is an apocalyptic number.

It is an amenable number.

854858921 is a deficient number, since it is larger than the sum of its proper divisors (134490199).

854858921 is a wasteful number, since it uses less digits than its factorization.

854858921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545943.

The product of its digits is 921600, while the sum is 50.

The square root of 854858921 is about 29237.9705349055. The cubic root of 854858921 is about 949.0697897415.

The spelling of 854858921 in words is "eight hundred fifty-four million, eight hundred fifty-eight thousand, nine hundred twenty-one".