440004393 has 10 divisors (see below), whose sum is σ = 657290634. Its totient is φ = 293336208.

The previous prime is 440004377. The next prime is 440004403. The reversal of 440004393 is 393400044.

It can be written as a sum of positive squares in only one way, i.e., 387774864 + 52229529 = 19692^2 + 7227^2 .

It is not a de Polignac number, because 440004393 - 2⁴ = 440004377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (440002393) 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 9 ways as a sum of consecutive naturals, for example, 2715996 + ... + 2716157.

Almost surely, 2^440004393 is an apocalyptic number.

It is an amenable number.

440004393 is a deficient number, since it is larger than the sum of its proper divisors (217286241).

440004393 is an equidigital number, since it uses as much as digits as its factorization.

440004393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432165 (or 5432156 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 440004393 is about 20976.2816771705. The cubic root of 440004393 is about 760.5930234121.

The spelling of 440004393 in words is "four hundred forty million, four thousand, three hundred ninety-three".