439057 has 4 divisors (see below), whose sum is σ = 440640. Its totient is φ = 437476.

The previous prime is 439009. The next prime is 439063. The reversal of 439057 is 750934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750934 = 2 ⋅375467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439057 is a prime.

It is a Duffinian number.

439057 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2⁴³⁹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

439057 is a deficient number, since it is larger than the sum of its proper divisors (1583).

439057 is a wasteful number, since it uses less digits than its factorization.

439057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 439057 is about 662.6137638172. The cubic root of 439057 is about 76.0046742278.

The spelling of 439057 in words is "four hundred thirty-nine thousand, fifty-seven".