478139 has 2 divisors, whose sum is σ = 478140. Its totient is φ = 478138.

The previous prime is 478129. The next prime is 478157. The reversal of 478139 is 931874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478139 - 2¹² = 474043 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478139.

It is not a weakly prime, because it can be changed into another prime (478129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239069 + 239070.

It is an arithmetic number, because the mean of its divisors is an integer number (239070).

2⁴⁷⁸¹³⁹ is an apocalyptic number.

478139 is a deficient number, since it is larger than the sum of its proper divisors (1).

478139 is an equidigital number, since it uses as much as digits as its factorization.

478139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 478139 is about 691.4759576442. The cubic root of 478139 is about 78.1960333151.

The spelling of 478139 in words is "four hundred seventy-eight thousand, one hundred thirty-nine".