423911 has 4 divisors (see below), whose sum is σ = 429792. Its totient is φ = 418032.

The previous prime is 423887. The next prime is 423931. The reversal of 423911 is 119324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423911 - 2⁶ = 423847 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2831 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (107448).

2⁴²³⁹¹¹ is an apocalyptic number.

423911 is a deficient number, since it is larger than the sum of its proper divisors (5881).

423911 is an equidigital number, since it uses as much as digits as its factorization.

423911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880.

The product of its digits is 216, while the sum is 20.

The square root of 423911 is about 651.0844799256. The cubic root of 423911 is about 75.1204582790.

The spelling of 423911 in words is "four hundred twenty-three thousand, nine hundred eleven".