439923 has 8 divisors (see below), whose sum is σ = 639936. Its totient is φ = 266600.

The previous prime is 439919. The next prime is 439949. The reversal of 439923 is 329934.

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

It is a cyclic number.

It is not a de Polignac number, because 439923 - 2² = 439919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (439903) 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, 6633 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (79992).

2⁴³⁹⁹²³ is an apocalyptic number.

439923 is a deficient number, since it is larger than the sum of its proper divisors (200013).

439923 is a wasteful number, since it uses less digits than its factorization.

439923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13345.

The product of its digits is 5832, while the sum is 30.

The square root of 439923 is about 663.2669145977. The cubic root of 439923 is about 76.0546121785.

The spelling of 439923 in words is "four hundred thirty-nine thousand, nine hundred twenty-three".