439971 has 24 divisors (see below), whose sum is σ = 708624. Its totient is φ = 241920.

The previous prime is 439969. The next prime is 439973. The reversal of 439971 is 179934.

It is an interprime number because it is at equal distance from previous prime (439969) and next prime (439973).

It is not a de Polignac number, because 439971 - 2¹ = 439969 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 439971.

It is not an unprimeable number, because it can be changed into a prime (439973) 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 23 ways as a sum of consecutive naturals, for example, 5991 + ... + 6063.

It is an arithmetic number, because the mean of its divisors is an integer number (29526).

2⁴³⁹⁹⁷¹ is an apocalyptic number.

439971 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

439971 is a deficient number, since it is larger than the sum of its proper divisors (268653).

439971 is a wasteful number, since it uses less digits than its factorization.

439971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 124 counting only the distinct ones).

The product of its digits is 6804, while the sum is 33.

The square root of 439971 is about 663.3030981384. The cubic root of 439971 is about 76.0573781843.

The spelling of 439971 in words is "four hundred thirty-nine thousand, nine hundred seventy-one".