440642 has 8 divisors (see below), whose sum is σ = 673596. Its totient is φ = 216112.

The previous prime is 440641. The next prime is 440651. The reversal of 440642 is 246044.

It can be written as a sum of positive squares in 2 ways, for example, as 436921 + 3721 = 661^2 + 61^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (440641) 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, 1973 + ... + 2184.

2⁴⁴⁰⁶⁴² is an apocalyptic number.

440642 is a deficient number, since it is larger than the sum of its proper divisors (232954).

440642 is a wasteful number, since it uses less digits than its factorization.

440642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 440642 is about 663.8087073849. The cubic root of 440642 is about 76.0960235938.

Adding to 440642 its reverse (246044), we get a palindrome (686686).

The spelling of 440642 in words is "four hundred forty thousand, six hundred forty-two".