440312 has 16 divisors (see below), whose sum is σ = 861840. Its totient is φ = 210496.

The previous prime is 440311. The next prime is 440329. The reversal of 440312 is 213044.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440312.

It is not an unprimeable number, because it can be changed into a prime (440311) 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, 1013 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2⁴⁴⁰³¹² is an apocalyptic number.

It is an amenable number.

440312 is a deficient number, since it is larger than the sum of its proper divisors (421528).

440312 is a wasteful number, since it uses less digits than its factorization.

440312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2418 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 440312 is about 663.5600952438. The cubic root of 440312 is about 76.0770225611.

Adding to 440312 its reverse (213044), we get a palindrome (653356).

The spelling of 440312 in words is "four hundred forty thousand, three hundred twelve", and thus it is an iban number.