439947 has 6 divisors (see below), whose sum is σ = 635492. Its totient is φ = 293292.

The previous prime is 439919. The next prime is 439949. The reversal of 439947 is 749934.

It is not a de Polignac number, because 439947 - 2⁶ = 439883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439949) 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 5 ways as a sum of consecutive naturals, for example, 24433 + ... + 24450.

2⁴³⁹⁹⁴⁷ is an apocalyptic number.

439947 is a deficient number, since it is larger than the sum of its proper divisors (195545).

439947 is a wasteful number, since it uses less digits than its factorization.

439947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48889 (or 48886 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 439947 is about 663.2850066148. The cubic root of 439947 is about 76.0559952065.

The spelling of 439947 in words is "four hundred thirty-nine thousand, nine hundred forty-seven".