4021584493 has 2 divisors, whose sum is σ = 4021584494. Its totient is φ = 4021584492.

The previous prime is 4021584467. The next prime is 4021584521. The reversal of 4021584493 is 3944851204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2862999049 + 1158585444 = 53507^2 + 34038^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021584493 - 2⁹ = 4021583981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4022584493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010792246 + 2010792247.

It is an arithmetic number, because the mean of its divisors is an integer number (2010792247).

Almost surely, 2^4021584493 is an apocalyptic number.

It is an amenable number.

4021584493 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021584493 is an equidigital number, since it uses as much as digits as its factorization.

4021584493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 4021584493 is about 63415.9640232647. The cubic root of 4021584493 is about 1590.2512020866.

The spelling of 4021584493 in words is "four billion, twenty-one million, five hundred eighty-four thousand, four hundred ninety-three".