478858 has 4 divisors (see below), whose sum is σ = 718290. Its totient is φ = 239428.

The previous prime is 478853. The next prime is 478861. The reversal of 478858 is 858874.

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

It can be written as a sum of positive squares in only one way, i.e., 471969 + 6889 = 687^2 + 83^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 478858.

It is not an unprimeable number, because it can be changed into a prime (478853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119713 + ... + 119716.

2⁴⁷⁸⁸⁵⁸ is an apocalyptic number.

478858 is a deficient number, since it is larger than the sum of its proper divisors (239432).

478858 is a wasteful number, since it uses less digits than its factorization.

478858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239431.

The product of its digits is 71680, while the sum is 40.

The square root of 478858 is about 691.9956647263. The cubic root of 478858 is about 78.2352093634.

The spelling of 478858 in words is "four hundred seventy-eight thousand, eight hundred fifty-eight".