853939 has 4 divisors (see below), whose sum is σ = 868000. Its totient is φ = 839880.

The previous prime is 853933. The next prime is 853949. The reversal of 853939 is 939358.

853939 = 87² + 88² + ... + 147².

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 853939 - 2⁹ = 853427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 853898 and 853907.

It is not an unprimeable number, because it can be changed into a prime (853933) 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 3 ways as a sum of consecutive naturals, for example, 6939 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (217000).

2⁸⁵³⁹³⁹ is an apocalyptic number.

853939 is a deficient number, since it is larger than the sum of its proper divisors (14061).

853939 is a wasteful number, since it uses less digits than its factorization.

853939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14060.

The product of its digits is 29160, while the sum is 37.

The square root of 853939 is about 924.0881992537. The cubic root of 853939 is about 94.8729233513.

The spelling of 853939 in words is "eight hundred fifty-three thousand, nine hundred thirty-nine".