871393 has 2 divisors, whose sum is σ = 871394. Its totient is φ = 871392.

The previous prime is 871349. The next prime is 871439. The reversal of 871393 is 393178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471969 + 399424 = 687^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 871393 - 2¹⁷ = 740321 is a prime.

It is not a weakly prime, because it can be changed into another prime (871303) 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 as a sum of consecutive naturals, namely, 435696 + 435697.

It is an arithmetic number, because the mean of its divisors is an integer number (435697).

2⁸⁷¹³⁹³ is an apocalyptic number.

It is an amenable number.

871393 is a deficient number, since it is larger than the sum of its proper divisors (1).

871393 is an equidigital number, since it uses as much as digits as its factorization.

871393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 871393 is about 933.4843330233. The cubic root of 871393 is about 95.5149506486.

The spelling of 871393 in words is "eight hundred seventy-one thousand, three hundred ninety-three".