440340340 has 24 divisors (see below), whose sum is σ = 1008780192. Its totient is φ = 160123680.

The previous prime is 440340283. The next prime is 440340403. The reversal of 440340340 is 43043044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000554 + ... + 1000993.

It is an arithmetic number, because the mean of its divisors is an integer number (42032508).

Almost surely, 2^440340340 is an apocalyptic number.

It is an amenable number.

440340340 is an abundant number, since it is smaller than the sum of its proper divisors (568439852).

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

440340340 is a wasteful number, since it uses less digits than its factorization.

440340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001567 (or 2001565 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 440340340 is about 20984.2879316883. The cubic root of 440340340 is about 760.7865471933.

Adding to 440340340 its reverse (43043044), we get a palindrome (483383384).

The spelling of 440340340 in words is "four hundred forty million, three hundred forty thousand, three hundred forty".