440340 has 48 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 113920.

The previous prime is 440339. The next prime is 440347. The reversal of 440340 is 43044.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 440340.

It is not an unprimeable number, because it can be changed into a prime (440347) 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, 2371 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2⁴⁴⁰³⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635040).

440340 is an abundant number, since it is smaller than the sum of its proper divisors (829740).

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

440340 is a wasteful number, since it uses less digits than its factorization.

440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 440340 is about 663.5811932236. The cubic root of 440340 is about 76.0786351385.

Adding to 440340 its reverse (43044), we get a palindrome (483384).

It can be divided in two parts, 440 and 340, that added together give a triangular number (780 = T₃₉).

The spelling of 440340 in words is "four hundred forty thousand, three hundred forty", and thus it is an iban number.