440020240403 has 4 divisors (see below), whose sum is σ = 440615667720. Its totient is φ = 439424813088.

The previous prime is 440020240397. The next prime is 440020240417. The reversal of 440020240403 is 304042020044.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440020240403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440020240433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297712550 + ... + 297714027.

It is an arithmetic number, because the mean of its divisors is an integer number (110153916930).

Almost surely, 2^440020240403 is an apocalyptic number.

440020240403 is a deficient number, since it is larger than the sum of its proper divisors (595427317).

440020240403 is an equidigital number, since it uses as much as digits as its factorization.

440020240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595427316.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 440020240403 its reverse (304042020044), we get a palindrome (744062260447).

The spelling of 440020240403 in words is "four hundred forty billion, twenty million, two hundred forty thousand, four hundred three".