4081393 has 2 divisors, whose sum is σ = 4081394. Its totient is φ = 4081392.

The previous prime is 4081387. The next prime is 4081397. The reversal of 4081393 is 3931804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2585664 + 1495729 = 1608^2 + 1223^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081393 - 2⁵ = 4081361 is a prime.

It is equal to p₂₈₈₅₅₀ and since 4081393 and 288550 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4081397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040696 + 2040697.

It is an arithmetic number, because the mean of its divisors is an integer number (2040697).

Almost surely, 2^4081393 is an apocalyptic number.

It is an amenable number.

4081393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081393 is an equidigital number, since it uses as much as digits as its factorization.

4081393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4081393 is about 2020.2457771271. The cubic root of 4081393 is about 159.8095781494.

The spelling of 4081393 in words is "four million, eighty-one thousand, three hundred ninety-three".