478339 has 2 divisors, whose sum is σ = 478340. Its totient is φ = 478338.

The previous prime is 478321. The next prime is 478343. The reversal of 478339 is 933874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478339 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (478399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239169 + 239170.

It is an arithmetic number, because the mean of its divisors is an integer number (239170).

2⁴⁷⁸³³⁹ is an apocalyptic number.

478339 is a deficient number, since it is larger than the sum of its proper divisors (1).

478339 is an equidigital number, since it uses as much as digits as its factorization.

478339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 478339 is about 691.6205607123. The cubic root of 478339 is about 78.2069346266.

Subtracting 478339 from its reverse (933874), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 478339 in words is "four hundred seventy-eight thousand, three hundred thirty-nine".