440140445 has 8 divisors (see below), whose sum is σ = 528316344. Its totient is φ = 352013824.

The previous prime is 440140429. The next prime is 440140447. The reversal of 440140445 is 544041044.

It can be written as a sum of positive squares in 4 ways, for example, as 357604 + 439782841 = 598^2 + 20971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 440140445 - 2⁴ = 440140429 is a prime.

It is a super-2 number, since 2×440140445² = 387447222649596050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440140447) 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 7 ways as a sum of consecutive naturals, for example, 11537 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (66039543).

Almost surely, 2^440140445 is an apocalyptic number.

It is an amenable number.

440140445 is a deficient number, since it is larger than the sum of its proper divisors (88175899).

440140445 is a wasteful number, since it uses less digits than its factorization.

440140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24639.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 440140445 is about 20979.5244226365. The cubic root of 440140445 is about 760.6714086433.

Adding to 440140445 its reverse (544041044), we get a palindrome (984181489).

The spelling of 440140445 in words is "four hundred forty million, one hundred forty thousand, four hundred forty-five".