439378 has 4 divisors (see below), whose sum is σ = 659070. Its totient is φ = 219688.

The previous prime is 439367. The next prime is 439381. The reversal of 439378 is 873934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873934 = 2 ⋅436967.

It can be written as a sum of positive squares in only one way, i.e., 257049 + 182329 = 507^2 + 427^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109843 + ... + 109846.

2⁴³⁹³⁷⁸ is an apocalyptic number.

439378 is a deficient number, since it is larger than the sum of its proper divisors (219692).

439378 is a wasteful number, since it uses less digits than its factorization.

439378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219691.

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

The square root of 439378 is about 662.8559421171. The cubic root of 439378 is about 76.0231923678.

The spelling of 439378 in words is "four hundred thirty-nine thousand, three hundred seventy-eight".