859401 has 24 divisors (see below), whose sum is σ = 1356264. Its totient is φ = 522240.

The previous prime is 859393. The next prime is 859423. The reversal of 859401 is 104958.

It can be written as a sum of positive squares in 4 ways, for example, as 76176 + 783225 = 276^2 + 885^2 .

It is not a de Polignac number, because 859401 - 2³ = 859393 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (859601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6205 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (56511).

2⁸⁵⁹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

859401 is a deficient number, since it is larger than the sum of its proper divisors (496863).

859401 is a wasteful number, since it uses less digits than its factorization.

859401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 859401 is about 927.0388341380. The cubic root of 859401 is about 95.0747703143.

The spelling of 859401 in words is "eight hundred fifty-nine thousand, four hundred one".