4381421875 has 14 divisors (see below), whose sum is σ = 5476726772. Its totient is φ = 3505125000.

The previous prime is 4381421873. The next prime is 4381421887. The reversal of 4381421875 is 5781241834.

It is not a de Polignac number, because 4381421875 - 2¹ = 4381421873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4381421873) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 124581 + ... + 155830.

Almost surely, 2^4381421875 is an apocalyptic number.

4381421875 is a deficient number, since it is larger than the sum of its proper divisors (1095304897).

4381421875 is an frugal number, since it uses more digits than its factorization.

4381421875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280441 (or 280416 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 4381421875 is about 66192.3097874670. The cubic root of 4381421875 is about 1636.3330068738. Note that the first 3 decimals are identical.

The spelling of 4381421875 in words is "four billion, three hundred eighty-one million, four hundred twenty-one thousand, eight hundred seventy-five".