440134441 has 4 divisors (see below), whose sum is σ = 441723652. Its totient is φ = 438545232.

The previous prime is 440134423. The next prime is 440134451. The reversal of 440134441 is 144431044.

It is a happy number.

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 222129216 + 218005225 = 14904^2 + 14765^2 .

It is a cyclic number.

It is not a de Polignac number, because 440134441 - 2²¹ = 438037289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440134451) 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 3 ways as a sum of consecutive naturals, for example, 794190 + ... + 794743.

It is an arithmetic number, because the mean of its divisors is an integer number (110430913).

Almost surely, 2^440134441 is an apocalyptic number.

It is an amenable number.

440134441 is a deficient number, since it is larger than the sum of its proper divisors (1589211).

440134441 is a wasteful number, since it uses less digits than its factorization.

440134441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589210.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 440134441 is about 20979.3813302490. The cubic root of 440134441 is about 760.6679498292.

Adding to 440134441 its reverse (144431044), we get a palindrome (584565485).

The spelling of 440134441 in words is "four hundred forty million, one hundred thirty-four thousand, four hundred forty-one".