440424020 has 24 divisors (see below), whose sum is σ = 925483104. Its totient is φ = 176056736.

The previous prime is 440424013. The next prime is 440424041. The reversal of 440424020 is 20424044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 440423983 and 440424001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29579 + ... + 41901.

It is an arithmetic number, because the mean of its divisors is an integer number (38561796).

Almost surely, 2^440424020 is an apocalyptic number.

It is an amenable number.

440424020 is an abundant number, since it is smaller than the sum of its proper divisors (485059084).

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

440424020 is a wasteful number, since it uses less digits than its factorization.

440424020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14119 (or 14117 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 440424020 is about 20986.2817097265. The cubic root of 440424020 is about 760.8347361207.

Adding to 440424020 its reverse (20424044), we get a palindrome (460848064).

The spelling of 440424020 in words is "four hundred forty million, four hundred twenty-four thousand, twenty".