478369 has 4 divisors (see below), whose sum is σ = 484996. Its totient is φ = 471744.

The previous prime is 478351. The next prime is 478391. The reversal of 478369 is 963874.

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 216225 + 262144 = 465^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 478369 - 2⁷ = 478241 is a prime.

It is a super-2 number, since 2×478369² = 457673800322, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3204 + ... + 3349.

It is an arithmetic number, because the mean of its divisors is an integer number (121249).

478369 is a Friedman number, since it can be written as (9^4-8)*(76-3), using all its digits and the basic arithmetic operations.

2⁴⁷⁸³⁶⁹ is an apocalyptic number.

It is an amenable number.

478369 is a deficient number, since it is larger than the sum of its proper divisors (6627).

478369 is an equidigital number, since it uses as much as digits as its factorization.

478369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626.

The product of its digits is 36288, while the sum is 37.

The square root of 478369 is about 691.6422485650. The cubic root of 478369 is about 78.2085695612.

The spelling of 478369 in words is "four hundred seventy-eight thousand, three hundred sixty-nine".