478905 has 16 divisors (see below), whose sum is σ = 875904. Its totient is φ = 218880.

The previous prime is 478901. The next prime is 478913. The reversal of 478905 is 509874.

It is not a de Polignac number, because 478905 - 2² = 478901 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2176 + ... + 2385.

It is an arithmetic number, because the mean of its divisors is an integer number (54744).

2⁴⁷⁸⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

478905 is a deficient number, since it is larger than the sum of its proper divisors (396999).

478905 is a wasteful number, since it uses less digits than its factorization.

478905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 478905 is about 692.0296236434. The cubic root of 478905 is about 78.2377688797.

It can be divided in two parts, 47890 and 5, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 478905 in words is "four hundred seventy-eight thousand, nine hundred five".