859901 has 16 divisors (see below), whose sum is σ = 1056000. Its totient is φ = 698544.

The previous prime is 859891. The next prime is 859913. The reversal of 859901 is 109958.

It is not a de Polignac number, because 859901 - 2¹⁰ = 858877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7835 + ... + 7943.

It is an arithmetic number, because the mean of its divisors is an integer number (66000).

2⁸⁵⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

859901 is a deficient number, since it is larger than the sum of its proper divisors (196099).

859901 is a wasteful number, since it uses less digits than its factorization.

859901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 859901 is about 927.3084707906. The cubic root of 859901 is about 95.0932049252.

The spelling of 859901 in words is "eight hundred fifty-nine thousand, nine hundred one".