912389 has 4 divisors (see below), whose sum is σ = 921024. Its totient is φ = 903756.

The previous prime is 912367. The next prime is 912391. The reversal of 912389 is 983219.

912389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983219 = 281 ⋅3499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-912389 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 (912349) 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, 4157 + ... + 4370.

It is an arithmetic number, because the mean of its divisors is an integer number (230256).

2⁹¹²³⁸⁹ is an apocalyptic number.

It is an amenable number.

912389 is a deficient number, since it is larger than the sum of its proper divisors (8635).

912389 is a wasteful number, since it uses less digits than its factorization.

912389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634.

The product of its digits is 3888, while the sum is 32.

The square root of 912389 is about 955.1905569047. The cubic root of 912389 is about 96.9899376674.

The spelling of 912389 in words is "nine hundred twelve thousand, three hundred eighty-nine".