440023300421 has 4 divisors (see below), whose sum is σ = 451915822092. Its totient is φ = 428130778752.

The previous prime is 440023300399. The next prime is 440023300429. The reversal of 440023300421 is 124003320044.

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

It can be written as a sum of positive squares in 2 ways, for example, as 155224968196 + 284798332225 = 393986^2 + 533665^2 .

It is a cyclic number.

It is not a de Polignac number, because 440023300421 - 2¹⁸ = 440023038277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440023300429) 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, 5946260780 + ... + 5946260853.

It is an arithmetic number, because the mean of its divisors is an integer number (112978955523).

Almost surely, 2^440023300421 is an apocalyptic number.

It is an amenable number.

440023300421 is a deficient number, since it is larger than the sum of its proper divisors (11892521671).

440023300421 is a wasteful number, since it uses less digits than its factorization.

440023300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892521670.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 440023300421 its reverse (124003320044), we get a palindrome (564026620465).

The spelling of 440023300421 in words is "four hundred forty billion, twenty-three million, three hundred thousand, four hundred twenty-one".