440046020 has 24 divisors (see below), whose sum is σ = 978456024. Its totient is φ = 165664256.

The previous prime is 440046011. The next prime is 440046031. The reversal of 440046020 is 20640044.

It can be written as a sum of positive squares in 4 ways, for example, as 183277444 + 256768576 = 13538^2 + 16024^2 .

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 = 440045983 and 440046001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646787 + ... + 647466.

It is an arithmetic number, because the mean of its divisors is an integer number (40769001).

Almost surely, 2^440046020 is an apocalyptic number.

It is an amenable number.

440046020 is an abundant number, since it is smaller than the sum of its proper divisors (538410004).

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

440046020 is a wasteful number, since it uses less digits than its factorization.

440046020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294279 (or 1294277 counting only the distinct ones).

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

The square root of 440046020 is about 20977.2738934305. The cubic root of 440046020 is about 760.6170081782.

Adding to 440046020 its reverse (20640044), we get a palindrome (460686064).

The spelling of 440046020 in words is "four hundred forty million, forty-six thousand, twenty".