609389 has 4 divisors (see below), whose sum is σ = 664800. Its totient is φ = 553980.

The previous prime is 609379. The next prime is 609391. The reversal of 609389 is 983906.

609389 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.

It is a cyclic number.

It is not a de Polignac number, because 609389 - 2⁴ = 609373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609359) 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, 27689 + ... + 27710.

It is an arithmetic number, because the mean of its divisors is an integer number (166200).

2⁶⁰⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

609389 is a deficient number, since it is larger than the sum of its proper divisors (55411).

609389 is a wasteful number, since it uses less digits than its factorization.

609389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55410.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 609389 is about 780.6337169249. The cubic root of 609389 is about 84.7809353280.

It can be divided in two parts, 60 and 9389, that added together give a palindrome (9449).

The spelling of 609389 in words is "six hundred nine thousand, three hundred eighty-nine".