440239105 has 4 divisors (see below), whose sum is σ = 528286932. Its totient is φ = 352191280.

The previous prime is 440239097. The next prime is 440239109. The reversal of 440239105 is 501932044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199120321 + 241118784 = 14111^2 + 15528^2 .

It is not a de Polignac number, because 440239105 - 2³ = 440239097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440239109) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44023906 + ... + 44023915.

It is an arithmetic number, because the mean of its divisors is an integer number (132071733).

Almost surely, 2^440239105 is an apocalyptic number.

It is an amenable number.

440239105 is a deficient number, since it is larger than the sum of its proper divisors (88047827).

440239105 is an equidigital number, since it uses as much as digits as its factorization.

440239105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88047826.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 440239105 is about 20981.8756311251. The cubic root of 440239105 is about 760.7282406805.

The spelling of 440239105 in words is "four hundred forty million, two hundred thirty-nine thousand, one hundred five".