440712 has 24 divisors (see below), whose sum is σ = 1193790. Its totient is φ = 146880.

The previous prime is 440711. The next prime is 440717. The reversal of 440712 is 217044.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 427716 + 12996 = 654^2 + 114^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (440711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2989 + ... + 3132.

2⁴⁴⁰⁷¹² is an apocalyptic number.

It is an amenable number.

440712 is an abundant number, since it is smaller than the sum of its proper divisors (753078).

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

440712 is a wasteful number, since it uses less digits than its factorization.

440712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133 (or 6126 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 440712 is about 663.8614313243. The cubic root of 440712 is about 76.1000528962.

Adding to 440712 its reverse (217044), we get a palindrome (657756).

The spelling of 440712 in words is "four hundred forty thousand, seven hundred twelve", and thus it is an iban number.