859898 has 8 divisors (see below), whose sum is σ = 1389108. Its totient is φ = 396864.

The previous prime is 859891. The next prime is 859913. The reversal of 859898 is 898958.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 822649 + 37249 = 907^2 + 193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (859891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16511 + ... + 16562.

2⁸⁵⁹⁸⁹⁸ is an apocalyptic number.

859898 is a deficient number, since it is larger than the sum of its proper divisors (529210).

859898 is a wasteful number, since it uses less digits than its factorization.

859898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33088.

The product of its digits is 207360, while the sum is 47.

The square root of 859898 is about 927.3068532045. The cubic root of 859898 is about 95.0930943389.

Subtracting 859898 from its reverse (898958), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 859898 in words is "eight hundred fifty-nine thousand, eight hundred ninety-eight".