859920 has 40 divisors (see below), whose sum is σ = 2666496. Its totient is φ = 229248.

The previous prime is 859919. The next prime is 859927. The reversal of 859920 is 29958.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (859927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552 + ... + 2031.

2⁸⁵⁹⁹²⁰ is an apocalyptic number.

859920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

859920 is an abundant number, since it is smaller than the sum of its proper divisors (1806576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

859920 is a wasteful number, since it uses less digits than its factorization.

859920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599 (or 3593 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 859920 is about 927.3187154371. The cubic root of 859920 is about 95.0939052995.

The spelling of 859920 in words is "eight hundred fifty-nine thousand, nine hundred twenty".