853899 has 4 divisors (see below), whose sum is σ = 1138536. Its totient is φ = 569264.

The previous prime is 853889. The next prime is 853901. The reversal of 853899 is 998358.

853899 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.

It is a cyclic number.

It is not a de Polignac number, because 853899 - 2⁹ = 853387 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 853899.

It is not an unprimeable number, because it can be changed into a prime (853819) 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, 142314 + ... + 142319.

It is an arithmetic number, because the mean of its divisors is an integer number (284634).

2⁸⁵³⁸⁹⁹ is an apocalyptic number.

853899 is a deficient number, since it is larger than the sum of its proper divisors (284637).

853899 is a wasteful number, since it uses less digits than its factorization.

853899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284636.

The product of its digits is 77760, while the sum is 42.

The square root of 853899 is about 924.0665560445. The cubic root of 853899 is about 94.8714419902.

The spelling of 853899 in words is "eight hundred fifty-three thousand, eight hundred ninety-nine".