853873 has 2 divisors, whose sum is σ = 853874. Its totient is φ = 853872.

The previous prime is 853843. The next prime is 853889. The reversal of 853873 is 378358.

853873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 288369 = 752^2 + 537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853873 is a prime.

It is not a weakly prime, because it can be changed into another prime (853813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426936 + 426937.

It is an arithmetic number, because the mean of its divisors is an integer number (426937).

2⁸⁵³⁸⁷³ is an apocalyptic number.

It is an amenable number.

853873 is a deficient number, since it is larger than the sum of its proper divisors (1).

853873 is an equidigital number, since it uses as much as digits as its factorization.

853873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 853873 is about 924.0524876867. The cubic root of 853873 is about 94.8704790806.

The spelling of 853873 in words is "eight hundred fifty-three thousand, eight hundred seventy-three".