3728393 has 2 divisors, whose sum is σ = 3728394. Its totient is φ = 3728392.

The previous prime is 3728377. The next prime is 3728407. The reversal of 3728393 is 3938273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2930944 + 797449 = 1712^2 + 893^2 .

It is an emirp because it is prime and its reverse (3938273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3728393 - 2⁴ = 3728377 is a prime.

It is a d-powerful number, because it can be written as 3⁸ + 7⁴ + 2¹³ + 8⁷ + 3⁹ + 9² + 3¹³ .

It is not a weakly prime, because it can be changed into another prime (3728303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864196 + 1864197.

It is an arithmetic number, because the mean of its divisors is an integer number (1864197).

Almost surely, 2^3728393 is an apocalyptic number.

It is an amenable number.

3728393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728393 is an equidigital number, since it uses as much as digits as its factorization.

3728393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 3728393 is about 1930.9047102330. The cubic root of 3728393 is about 155.0626593697.

The spelling of 3728393 in words is "three million, seven hundred twenty-eight thousand, three hundred ninety-three".