478855 has 16 divisors (see below), whose sum is σ = 635040. Its totient is φ = 344448.

The previous prime is 478853. The next prime is 478861. The reversal of 478855 is 558874.

478855 = 280² + 281² + ... + 285².

It is not a de Polignac number, because 478855 - 2¹ = 478853 is a prime.

It is a super-2 number, since 2×478855² = 458604222050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478853) 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 15 ways as a sum of consecutive naturals, for example, 3376 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2⁴⁷⁸⁸⁵⁵ is an apocalyptic number.

478855 is a deficient number, since it is larger than the sum of its proper divisors (156185).

478855 is a wasteful number, since it uses less digits than its factorization.

478855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210.

The product of its digits is 44800, while the sum is 37.

The square root of 478855 is about 691.9934970793. The cubic root of 478855 is about 78.2350459844.

The spelling of 478855 in words is "four hundred seventy-eight thousand, eight hundred fifty-five".