4378393 has 4 divisors (see below), whose sum is σ = 4384548. Its totient is φ = 4372240.

The previous prime is 4378373. The next prime is 4378399. The reversal of 4378393 is 3938734.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 1149184 = 1797^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 4378393 - 2⁹ = 4377881 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 3⁵ + 7² + 8 + 3⁸ + 9² + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (1096137).

Almost surely, 2^4378393 is an apocalyptic number.

It is an amenable number.

4378393 is a deficient number, since it is larger than the sum of its proper divisors (6155).

4378393 is an equidigital number, since it uses as much as digits as its factorization.

4378393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154.

The product of its digits is 54432, while the sum is 37.

The square root of 4378393 is about 2092.4609912732. The cubic root of 4378393 is about 163.5955854525.

The spelling of 4378393 in words is "four million, three hundred seventy-eight thousand, three hundred ninety-three".