609390 has 64 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 155520.

The previous prime is 609379. The next prime is 609391. The reversal of 609390 is 93906.

609390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9960 + ... + 10020.

It is an arithmetic number, because the mean of its divisors is an integer number (26505).

2⁶⁰⁹³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848160).

609390 is an abundant number, since it is smaller than the sum of its proper divisors (1086930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609390 is a wasteful number, since it uses less digits than its factorization.

609390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 609390 is about 780.6343574299. The cubic root of 609390 is about 84.7809817028.

It can be divided in two parts, 609 and 390, that added together give a palindrome (999).

The spelling of 609390 in words is "six hundred nine thousand, three hundred ninety".