440343440 has 20 divisors (see below), whose sum is σ = 1023798684. Its totient is φ = 176137344.

The previous prime is 440343427. The next prime is 440343443. The reversal of 440343440 is 44343044.

It can be written as a sum of positive squares in 2 ways, for example, as 217975696 + 222367744 = 14764^2 + 14912^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (440343443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752067 + ... + 2752226.

Almost surely, 2^440343440 is an apocalyptic number.

440343440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440343440 is an abundant number, since it is smaller than the sum of its proper divisors (583455244).

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

440343440 is a wasteful number, since it uses less digits than its factorization.

440343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504306 (or 5504300 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 440343440 is about 20984.3617963473. The cubic root of 440343440 is about 760.7883325039.

Adding to 440343440 its reverse (44343044), we get a palindrome (484686484).

It can be divided in two parts, 44034 and 3440, that added together give a palindrome (47474).

The spelling of 440343440 in words is "four hundred forty million, three hundred forty-three thousand, four hundred forty".