440286 has 32 divisors (see below), whose sum is σ = 1099008. Its totient is φ = 114240.

The previous prime is 440281. The next prime is 440303. The reversal of 440286 is 682044.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440281) 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, 15 + ... + 938.

It is an arithmetic number, because the mean of its divisors is an integer number (34344).

2⁴⁴⁰²⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549504).

440286 is an abundant number, since it is smaller than the sum of its proper divisors (658722).

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

440286 is a wasteful number, since it uses less digits than its factorization.

440286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 440286 is about 663.5405036620. The cubic root of 440286 is about 76.0755251066.

The spelling of 440286 in words is "four hundred forty thousand, two hundred eighty-six".