423985 has 8 divisors (see below), whose sum is σ = 535680. Its totient is φ = 321264.

The previous prime is 423977. The next prime is 423989. The reversal of 423985 is 589324.

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 423985 - 2³ = 423977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423989) 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, 2137 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2⁴²³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

423985 is a deficient number, since it is larger than the sum of its proper divisors (111695).

423985 is a wasteful number, since it uses less digits than its factorization.

423985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487.

The product of its digits is 8640, while the sum is 31.

The square root of 423985 is about 651.1413057087. The cubic root of 423985 is about 75.1248291575.

The spelling of 423985 in words is "four hundred twenty-three thousand, nine hundred eighty-five".