853209 has 24 divisors (see below), whose sum is σ = 1460160. Its totient is φ = 469728.

The previous prime is 853189. The next prime is 853211. The reversal of 853209 is 902358.

It is not a de Polignac number, because 853209 - 2⁸ = 852953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (853289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1594 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (60840).

2⁸⁵³²⁰⁹ is an apocalyptic number.

It is an amenable number.

853209 is a deficient number, since it is larger than the sum of its proper divisors (606951).

853209 is a wasteful number, since it uses less digits than its factorization.

853209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 853209 is about 923.6931308611. The cubic root of 853209 is about 94.8458812251.

The spelling of 853209 in words is "eight hundred fifty-three thousand, two hundred nine".