478147 has 4 divisors (see below), whose sum is σ = 498960. Its totient is φ = 457336.

The previous prime is 478139. The next prime is 478157. The reversal of 478147 is 741874.

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

It is a cyclic number.

It is not a de Polignac number, because 478147 - 2³ = 478139 is a prime.

It is a super-3 number, since 3×478147³ = 327948433303447569, which contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4⁸ + 7² + 1 + 8⁵ + 4⁹ + 7⁶ .

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 (478157) 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, 10372 + ... + 10417.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

2⁴⁷⁸¹⁴⁷ is an apocalyptic number.

478147 is a deficient number, since it is larger than the sum of its proper divisors (20813).

478147 is a wasteful number, since it uses less digits than its factorization.

478147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20812.

The product of its digits is 6272, while the sum is 31.

The square root of 478147 is about 691.4817423475. The cubic root of 478147 is about 78.1964694259.

It can be divided in two parts, 478 and 147, that added together give a 4-th power (625 = 5⁴).

The spelling of 478147 in words is "four hundred seventy-eight thousand, one hundred forty-seven".