423939 has 8 divisors (see below), whose sum is σ = 568512. Its totient is φ = 281000.

The previous prime is 423931. The next prime is 423949. The reversal of 423939 is 939324.

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 423939 - 2³ = 423931 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (423931) 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, 472 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (71064).

2⁴²³⁹³⁹ is an apocalyptic number.

423939 is a deficient number, since it is larger than the sum of its proper divisors (144573).

423939 is a wasteful number, since it uses less digits than its factorization.

423939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817.

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

The square root of 423939 is about 651.1059821565. The cubic root of 423939 is about 75.1221121847.

It can be divided in two parts, 4239 and 39, that added together give a triangular number (4278 = T₉₂).

The spelling of 423939 in words is "four hundred twenty-three thousand, nine hundred thirty-nine".