440064423 has 12 divisors (see below), whose sum is σ = 643308120. Its totient is φ = 289841136.

The previous prime is 440064389. The next prime is 440064433. The reversal of 440064423 is 324460044.

It is not a de Polignac number, because 440064423 - 2¹³ = 440056231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440064433) 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, 293808 + ... + 295301.

It is an arithmetic number, because the mean of its divisors is an integer number (53609010).

Almost surely, 2^440064423 is an apocalyptic number.

440064423 is a deficient number, since it is larger than the sum of its proper divisors (203243697).

440064423 is a wasteful number, since it uses less digits than its factorization.

440064423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589198 (or 589195 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 440064423 is about 20977.7125302069. The cubic root of 440064423 is about 760.6276111902.

The spelling of 440064423 in words is "four hundred forty million, sixty-four thousand, four hundred twenty-three".