854391 has 8 divisors (see below), whose sum is σ = 1176064. Its totient is φ = 551160.

The previous prime is 854387. The next prime is 854407. The reversal of 854391 is 193458.

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

It is not a de Polignac number, because 854391 - 2² = 854387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4501 + ... + 4686.

It is an arithmetic number, because the mean of its divisors is an integer number (147008).

2⁸⁵⁴³⁹¹ is an apocalyptic number.

854391 is a deficient number, since it is larger than the sum of its proper divisors (321673).

854391 is a wasteful number, since it uses less digits than its factorization.

854391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221.

The product of its digits is 4320, while the sum is 30.

The square root of 854391 is about 924.3327322994. The cubic root of 854391 is about 94.8896595185.

The spelling of 854391 in words is "eight hundred fifty-four thousand, three hundred ninety-one".