440423140 has 24 divisors (see below), whose sum is σ = 931102200. Its totient is φ = 174985728.

The previous prime is 440423117. The next prime is 440423161. The reversal of 440423140 is 41324044.

It can be written as a sum of positive squares in 4 ways, for example, as 25160256 + 415262884 = 5016^2 + 20378^2 .

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, 70917 + ... + 76876.

It is an arithmetic number, because the mean of its divisors is an integer number (38795925).

Almost surely, 2^440423140 is an apocalyptic number.

It is an amenable number.

440423140 is an abundant number, since it is smaller than the sum of its proper divisors (490679060).

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

440423140 is a wasteful number, since it uses less digits than its factorization.

440423140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147951 (or 147949 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 440423140 is about 20986.2607436389. The cubic root of 440423140 is about 760.8342293855.

Adding to 440423140 its reverse (41324044), we get a palindrome (481747184).

The spelling of 440423140 in words is "four hundred forty million, four hundred twenty-three thousand, one hundred forty".