439887 has 8 divisors (see below), whose sum is σ = 670336. Its totient is φ = 251352.

The previous prime is 439883. The next prime is 439891. The reversal of 439887 is 788934.

It is an interprime number because it is at equal distance from previous prime (439883) and next prime (439891).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 439887 - 2² = 439883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10453 + ... + 10494.

It is an arithmetic number, because the mean of its divisors is an integer number (83792).

2⁴³⁹⁸⁸⁷ is an apocalyptic number.

439887 is a deficient number, since it is larger than the sum of its proper divisors (230449).

439887 is a wasteful number, since it uses less digits than its factorization.

439887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20957.

The product of its digits is 48384, while the sum is 39.

The square root of 439887 is about 663.2397756468. The cubic root of 439887 is about 76.0525375422.

It can be divided in two parts, 439 and 887, that added together give a triangular number (1326 = T₅₁).

The spelling of 439887 in words is "four hundred thirty-nine thousand, eight hundred eighty-seven".