440310423 has 12 divisors (see below), whose sum is σ = 682930680. Its totient is φ = 251605872.

The previous prime is 440310401. The next prime is 440310443. The reversal of 440310423 is 324013044.

It is not a de Polignac number, because 440310423 - 2¹⁶ = 440244887 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 440310423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440310443) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1497508 + ... + 1497801.

It is an arithmetic number, because the mean of its divisors is an integer number (56910890).

Almost surely, 2^440310423 is an apocalyptic number.

440310423 is a deficient number, since it is larger than the sum of its proper divisors (242620257).

440310423 is a wasteful number, since it uses less digits than its factorization.

440310423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995326 (or 2995319 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 440310423 is about 20983.5750767118. The cubic root of 440310423 is about 760.7693173641.

Adding to 440310423 its reverse (324013044), we get a palindrome (764323467).

The spelling of 440310423 in words is "four hundred forty million, three hundred ten thousand, four hundred twenty-three".