439899 has 8 divisors (see below), whose sum is σ = 589632. Its totient is φ = 291720.

The previous prime is 439891. The next prime is 439903. The reversal of 439899 is 998934.

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

It is not a de Polignac number, because 439899 - 2³ = 439891 is a prime.

It is a super-2 number, since 2×439899² = 387022260402, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 439899.

It is not an unprimeable number, because it can be changed into a prime (439891) 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, 772 + ... + 1214.

It is an arithmetic number, because the mean of its divisors is an integer number (73704).

2⁴³⁹⁸⁹⁹ is an apocalyptic number.

439899 is a deficient number, since it is larger than the sum of its proper divisors (149733).

439899 is a wasteful number, since it uses less digits than its factorization.

439899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 69984, while the sum is 42.

The square root of 439899 is about 663.2488220872. The cubic root of 439899 is about 76.0532291002.

It can be divided in two parts, 4 and 39899, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 439899 in words is "four hundred thirty-nine thousand, eight hundred ninety-nine".