906859 has 4 divisors (see below), whose sum is σ = 938160. Its totient is φ = 875560.

The previous prime is 906847. The next prime is 906869. The reversal of 906859 is 958609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 906859 - 2¹¹ = 904811 is a prime.

It is a super-3 number, since 3×906859³ = 2237384149699193337, which contains 333 as substring.

It is a Duffinian number.

906859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (906809) 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, 15607 + ... + 15664.

It is an arithmetic number, because the mean of its divisors is an integer number (234540).

2⁹⁰⁶⁸⁵⁹ is an apocalyptic number.

906859 is a deficient number, since it is larger than the sum of its proper divisors (31301).

906859 is a wasteful number, since it uses less digits than its factorization.

906859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31300.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 906859 is about 952.2914469846. The cubic root of 906859 is about 96.7935880711.

The spelling of 906859 in words is "nine hundred six thousand, eight hundred fifty-nine".