478915 has 4 divisors (see below), whose sum is σ = 574704. Its totient is φ = 383128.

The previous prime is 478913. The next prime is 478927. The reversal of 478915 is 519874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519874 = 2 ⋅259937.

It is a cyclic number.

It is not a de Polignac number, because 478915 - 2¹ = 478913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478913) 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, 47887 + ... + 47896.

It is an arithmetic number, because the mean of its divisors is an integer number (143676).

2⁴⁷⁸⁹¹⁵ is an apocalyptic number.

478915 is a deficient number, since it is larger than the sum of its proper divisors (95789).

478915 is an equidigital number, since it uses as much as digits as its factorization.

478915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95788.

The product of its digits is 10080, while the sum is 34.

The square root of 478915 is about 692.0368487299. The cubic root of 478915 is about 78.2383134360.

The spelling of 478915 in words is "four hundred seventy-eight thousand, nine hundred fifteen".