440303423321 has 4 divisors (see below), whose sum is σ = 449671581312. Its totient is φ = 430935265332.

The previous prime is 440303423317. The next prime is 440303423407. The reversal of 440303423321 is 123324303044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440303423321 - 2² = 440303423317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440303423311) 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, 4684078925 + ... + 4684079018.

It is an arithmetic number, because the mean of its divisors is an integer number (112417895328).

Almost surely, 2^440303423321 is an apocalyptic number.

It is an amenable number.

440303423321 is a deficient number, since it is larger than the sum of its proper divisors (9368157991).

440303423321 is an equidigital number, since it uses as much as digits as its factorization.

440303423321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368157990.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 440303423321 its reverse (123324303044), we get a palindrome (563627726365).

The spelling of 440303423321 in words is "four hundred forty billion, three hundred three million, four hundred twenty-three thousand, three hundred twenty-one".