478393 has 4 divisors (see below), whose sum is σ = 479988. Its totient is φ = 476800.

The previous prime is 478391. The next prime is 478399. The reversal of 478393 is 393874.

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 393129 + 85264 = 627^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 478393 - 2¹ = 478391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478391) 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, 196 + ... + 997.

It is an arithmetic number, because the mean of its divisors is an integer number (119997).

2⁴⁷⁸³⁹³ is an apocalyptic number.

It is an amenable number.

478393 is a deficient number, since it is larger than the sum of its proper divisors (1595).

478393 is a wasteful number, since it uses less digits than its factorization.

478393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its digits is 18144, while the sum is 34.

The square root of 478393 is about 691.6595983575. The cubic root of 478393 is about 78.2098774597.

The spelling of 478393 in words is "four hundred seventy-eight thousand, three hundred ninety-three".