440425020 has 96 divisors (see below), whose sum is σ = 1416780288. Its totient is φ = 100138752.

The previous prime is 440425019. The next prime is 440425021. The reversal of 440425020 is 20524044.

It is an interprime number because it is at equal distance from previous prime (440425019) and next prime (440425021).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440425021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80079 + ... + 85401.

It is an arithmetic number, because the mean of its divisors is an integer number (14758128).

Almost surely, 2^440425020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440425020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708390144).

440425020 is an abundant number, since it is smaller than the sum of its proper divisors (976355268).

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

440425020 is a wasteful number, since it uses less digits than its factorization.

440425020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 440425020 is about 20986.3055348005. The cubic root of 440425020 is about 760.8353119553.

Adding to 440425020 its reverse (20524044), we get a palindrome (460949064).

The spelling of 440425020 in words is "four hundred forty million, four hundred twenty-five thousand, twenty".