440423020 has 12 divisors (see below), whose sum is σ = 924888384. Its totient is φ = 176169200.

The previous prime is 440422979. The next prime is 440423083. The reversal of 440423020 is 20324044.

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 3 ways as a sum of consecutive naturals, for example, 11010556 + ... + 11010595.

It is an arithmetic number, because the mean of its divisors is an integer number (77074032).

Almost surely, 2^440423020 is an apocalyptic number.

It is an amenable number.

440423020 is an abundant number, since it is smaller than the sum of its proper divisors (484465364).

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

440423020 is a wasteful number, since it uses less digits than its factorization.

440423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22021160 (or 22021158 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 440423020 is about 20986.2578846254. The cubic root of 440423020 is about 760.8341602852.

Adding to 440423020 its reverse (20324044), we get a palindrome (460747064).

The spelling of 440423020 in words is "four hundred forty million, four hundred twenty-three thousand, twenty".