859973 has 2 divisors, whose sum is σ = 859974. Its totient is φ = 859972.

The previous prime is 859939. The next prime is 859981. The reversal of 859973 is 379958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452929 + 407044 = 673^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 859973 - 2¹⁴ = 843589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 859973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859913) 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, 429986 + 429987.

It is an arithmetic number, because the mean of its divisors is an integer number (429987).

2⁸⁵⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

859973 is a deficient number, since it is larger than the sum of its proper divisors (1).

859973 is an equidigital number, since it uses as much as digits as its factorization.

859973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 859973 is about 927.3472920109. The cubic root of 859973 is about 95.0958589205.

The spelling of 859973 in words is "eight hundred fifty-nine thousand, nine hundred seventy-three".