4000093 has 2 divisors, whose sum is σ = 4000094. Its totient is φ = 4000092.

The previous prime is 4000081. The next prime is 4000133. The reversal of 4000093 is 3900004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3229209 + 770884 = 1797^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000093 - 2⁹ = 3999581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000046 + 2000047.

It is an arithmetic number, because the mean of its divisors is an integer number (2000047).

Almost surely, 2^4000093 is an apocalyptic number.

It is an amenable number.

4000093 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000093 is an equidigital number, since it uses as much as digits as its factorization.

4000093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 4000093 is about 2000.0232498649. The cubic root of 4000093 is about 158.7413354231.

Adding to 4000093 its reverse (3900004), we get a palindrome (7900097).

The spelling of 4000093 in words is "four million, ninety-three", and thus it is an aban number.