4421313421 has 4 divisors (see below), whose sum is σ = 5052929632. Its totient is φ = 3789697212.

The previous prime is 4421313397. The next prime is 4421313427. The reversal of 4421313421 is 1243131244.

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 not a de Polignac number, because 4421313421 - 2⁵ = 4421313389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421313427) 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, 315808095 + ... + 315808108.

It is an arithmetic number, because the mean of its divisors is an integer number (1263232408).

Almost surely, 2^4421313421 is an apocalyptic number.

It is an amenable number.

4421313421 is a deficient number, since it is larger than the sum of its proper divisors (631616211).

4421313421 is an equidigital number, since it uses as much as digits as its factorization.

4421313421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631616210.

The product of its digits is 2304, while the sum is 25.

The square root of 4421313421 is about 66492.9576797423. The cubic root of 4421313421 is about 1641.2841198172.

Adding to 4421313421 its reverse (1243131244), we get a palindrome (5664444665).

The spelling of 4421313421 in words is "four billion, four hundred twenty-one million, three hundred thirteen thousand, four hundred twenty-one".