853998 has 16 divisors (see below), whose sum is σ = 1717200. Its totient is φ = 283136.

The previous prime is 853981. The next prime is 853999. The reversal of 853998 is 899358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853999) by changing a digit.

853998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (107325).

2⁸⁵³⁹⁹⁸ is an apocalyptic number.

853998 is an abundant number, since it is smaller than the sum of its proper divisors (863202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

853998 is a wasteful number, since it uses less digits than its factorization.

853998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

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

The square root of 853998 is about 924.1201220621. The cubic root of 853998 is about 94.8751082746.

The spelling of 853998 in words is "eight hundred fifty-three thousand, nine hundred ninety-eight".