853973 has 4 divisors (see below), whose sum is σ = 862368. Its totient is φ = 845580.

The previous prime is 853969. The next prime is 853981. The reversal of 853973 is 379358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 853973 - 2² = 853969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853903) 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, 4043 + ... + 4248.

It is an arithmetic number, because the mean of its divisors is an integer number (215592).

2⁸⁵³⁹⁷³ is an apocalyptic number.

It is an amenable number.

853973 is a deficient number, since it is larger than the sum of its proper divisors (8395).

853973 is a wasteful number, since it uses less digits than its factorization.

853973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8394.

The product of its digits is 22680, while the sum is 35.

The square root of 853973 is about 924.1065955830. The cubic root of 853973 is about 94.8741824719.

The spelling of 853973 in words is "eight hundred fifty-three thousand, nine hundred seventy-three".