3828928421 has 4 divisors (see below), whose sum is σ = 3917973312. Its totient is φ = 3739883532.

The previous prime is 3828928409. The next prime is 3828928429. The reversal of 3828928421 is 1248298283.

3828928421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3828928421 - 2⁶ = 3828928357 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 (3828928429) 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, 44522381 + ... + 44522466.

It is an arithmetic number, because the mean of its divisors is an integer number (979493328).

Almost surely, 2^3828928421 is an apocalyptic number.

It is an amenable number.

3828928421 is a deficient number, since it is larger than the sum of its proper divisors (89044891).

3828928421 is an equidigital number, since it uses as much as digits as its factorization.

3828928421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89044890.

The product of its digits is 442368, while the sum is 47.

The square root of 3828928421 is about 61878.3356353417. The cubic root of 3828928421 is about 1564.4406158492.

The spelling of 3828928421 in words is "three billion, eight hundred twenty-eight million, nine hundred twenty-eight thousand, four hundred twenty-one".