918423 has 12 divisors (see below), whose sum is σ = 1447368. Its totient is φ = 556560.

The previous prime is 918397. The next prime is 918431. The reversal of 918423 is 324819.

918423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 918423 - 2¹² = 914327 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918423.

It is not an unprimeable number, because it can be changed into a prime (918433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4540 + ... + 4737.

It is an arithmetic number, because the mean of its divisors is an integer number (120614).

2⁹¹⁸⁴²³ is an apocalyptic number.

918423 is a deficient number, since it is larger than the sum of its proper divisors (528945).

918423 is a wasteful number, since it uses less digits than its factorization.

918423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294 (or 9291 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 918423 is about 958.3438839999. The cubic root of 918423 is about 97.2032793691.

The spelling of 918423 in words is "nine hundred eighteen thousand, four hundred twenty-three".