440000 has 70 divisors (see below), whose sum is σ = 1190244. Its totient is φ = 160000.

The previous prime is 439991. The next prime is 440009. The reversal of 440000 is 44.

It is a happy number.

440000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (439991) and next prime (440009).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 440000.

It is not an unprimeable number, because it can be changed into a prime (440009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39995 + ... + 40005.

2⁴⁴⁰⁰⁰⁰ is an apocalyptic number.

440000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595122).

440000 is an abundant number, since it is smaller than the sum of its proper divisors (750244).

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

440000 is an equidigital number, since it uses as much as digits as its factorization.

440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 440000 is about 663.3249580711. The cubic root of 440000 is about 76.0590492152.

Adding to 440000 its reverse (44), we get a palindrome (440044).

Multiplying 440000 by its reverse (44), we get a square (19360000 = 4400²).

440000 divided by its reverse (44) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 4 and 40000, that multiplied together give a 4-th power (160000 = 20⁴).

The spelling of 440000 in words is "four hundred forty thousand", and thus it is an iban number.