439955 has 4 divisors (see below), whose sum is σ = 527952. Its totient is φ = 351960.

The previous prime is 439949. The next prime is 439961. The reversal of 439955 is 559934.

439955 = T₄₁₇ + T₄₁₈ + ... + T₄₂₁.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559934 = 2 ⋅279967.

It is an interprime number because it is at equal distance from previous prime (439949) and next prime (439961).

It is not a de Polignac number, because 439955 - 2⁶ = 439891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 43991 + ... + 44000.

It is an arithmetic number, because the mean of its divisors is an integer number (131988).

2⁴³⁹⁹⁵⁵ is an apocalyptic number.

439955 is a deficient number, since it is larger than the sum of its proper divisors (87997).

439955 is an equidigital number, since it uses as much as digits as its factorization.

439955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87996.

The product of its digits is 24300, while the sum is 35.

The square root of 439955 is about 663.2910371775. The cubic root of 439955 is about 76.0564562047.

The spelling of 439955 in words is "four hundred thirty-nine thousand, nine hundred fifty-five".