440021430403 has 4 divisors (see below), whose sum is σ = 450254486968. Its totient is φ = 429788373840.

The previous prime is 440021430379. The next prime is 440021430463. The reversal of 440021430403 is 304034120044.

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-440021430403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440021430463) 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, 5116528218 + ... + 5116528303.

It is an arithmetic number, because the mean of its divisors is an integer number (112563621742).

Almost surely, 2^440021430403 is an apocalyptic number.

440021430403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

440021430403 is a deficient number, since it is larger than the sum of its proper divisors (10233056565).

440021430403 is a wasteful number, since it uses less digits than its factorization.

440021430403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233056564.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 440021430403 its reverse (304034120044), we get a palindrome (744055550447).

The spelling of 440021430403 in words is "four hundred forty billion, twenty-one million, four hundred thirty thousand, four hundred three".