440420340 has 48 divisors (see below), whose sum is σ = 1234275840. Its totient is φ = 117340800.

The previous prime is 440420333. The next prime is 440420347. The reversal of 440420340 is 43024044.

It is an interprime number because it is at equal distance from previous prime (440420333) and next prime (440420347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440420347) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 83790 + ... + 88890.

It is an arithmetic number, because the mean of its divisors is an integer number (25714080).

Almost surely, 2^440420340 is an apocalyptic number.

It is an amenable number.

440420340 is an abundant number, since it is smaller than the sum of its proper divisors (793855500).

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

440420340 is a wasteful number, since it uses less digits than its factorization.

440420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552 (or 6550 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 440420340 is about 20986.1940332210. The cubic root of 440420340 is about 760.8326170419.

Adding to 440420340 its reverse (43024044), we get a palindrome (483444384).

The spelling of 440420340 in words is "four hundred forty million, four hundred twenty thousand, three hundred forty".