854109 has 12 divisors (see below), whose sum is σ = 1262976. Its totient is φ = 555912.

The previous prime is 854099. The next prime is 854111. The reversal of 854109 is 901458.

It is not a de Polignac number, because 854109 - 2⁴ = 854093 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (105248).

2⁸⁵⁴¹⁰⁹ is an apocalyptic number.

It is an amenable number.

854109 is a deficient number, since it is larger than the sum of its proper divisors (408867).

854109 is a wasteful number, since it uses less digits than its factorization.

854109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 854109 is about 924.1801772382. The cubic root of 854109 is about 94.8792186202.

The spelling of 854109 in words is "eight hundred fifty-four thousand, one hundred nine".