4002043393 has 2 divisors, whose sum is σ = 4002043394. Its totient is φ = 4002043392.

The previous prime is 4002043387. The next prime is 4002043403. The reversal of 4002043393 is 3933402004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3603961089 + 398082304 = 60033^2 + 19952^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002043393 - 2¹³ = 4002035201 is a prime.

It is not a weakly prime, because it can be changed into another prime (4002043313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001021696 + 2001021697.

It is an arithmetic number, because the mean of its divisors is an integer number (2001021697).

Almost surely, 2^4002043393 is an apocalyptic number.

It is an amenable number.

4002043393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002043393 is an equidigital number, since it uses as much as digits as its factorization.

4002043393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 4002043393 is about 63261.7055808646. The cubic root of 4002043393 is about 1587.6713129691.

Adding to 4002043393 its reverse (3933402004), we get a palindrome (7935445397).

The spelling of 4002043393 in words is "four billion, two million, forty-three thousand, three hundred ninety-three".