440039842 has 8 divisors (see below), whose sum is σ = 720065232. Its totient is φ = 200018100.

The previous prime is 440039837. The next prime is 440039843. The reversal of 440039842 is 248930044.

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

It is a junction number, because it is equal to n+sod(n) for n = 440039798 and 440039807.

It is not an unprimeable number, because it can be changed into a prime (440039843) 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, 10000884 + ... + 10000927.

It is an arithmetic number, because the mean of its divisors is an integer number (90008154).

Almost surely, 2^440039842 is an apocalyptic number.

440039842 is a deficient number, since it is larger than the sum of its proper divisors (280025390).

440039842 is a wasteful number, since it uses less digits than its factorization.

440039842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001824.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 440039842 is about 20977.1266383173. The cubic root of 440039842 is about 760.6134486157.

Adding to 440039842 its reverse (248930044), we get a palindrome (688969886).

The spelling of 440039842 in words is "four hundred forty million, thirty-nine thousand, eight hundred forty-two".