4004928421 has 16 divisors (see below), whose sum is σ = 4512227328. Its totient is φ = 3529929600.

The previous prime is 4004928413. The next prime is 4004928427. The reversal of 4004928421 is 1248294004.

It is a cyclic number.

It is not a de Polignac number, because 4004928421 - 2³ = 4004928413 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 (4004928427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54885 + ... + 104986.

It is an arithmetic number, because the mean of its divisors is an integer number (282014208).

Almost surely, 2^4004928421 is an apocalyptic number.

4004928421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4004928421 is a deficient number, since it is larger than the sum of its proper divisors (507298907).

4004928421 is a wasteful number, since it uses less digits than its factorization.

4004928421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159972.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 4004928421 is about 63284.5037983233. The cubic root of 4004928421 is about 1588.0527327850.

The spelling of 4004928421 in words is "four billion, four million, nine hundred twenty-eight thousand, four hundred twenty-one".