923989 has 8 divisors (see below), whose sum is σ = 1061280. Its totient is φ = 795600.

The previous prime is 923987. The next prime is 924019. The reversal of 923989 is 989329.

It is a happy number.

923989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 923989 - 2¹ = 923987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (923983) 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, 2002 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (132660).

2⁹²³⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

923989 is a deficient number, since it is larger than the sum of its proper divisors (137291).

923989 is a wasteful number, since it uses less digits than its factorization.

923989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451.

The product of its digits is 34992, while the sum is 40.

The square root of 923989 is about 961.2434655175. The cubic root of 923989 is about 97.3992472258.

The spelling of 923989 in words is "nine hundred twenty-three thousand, nine hundred eighty-nine".