609574989 has 4 divisors (see below), whose sum is σ = 812766656. Its totient is φ = 406383324.

The previous prime is 609574939. The next prime is 609575017. The reversal of 609574989 is 989475906.

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 not a de Polignac number, because 609574989 - 2¹¹ = 609572941 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 (609574919) 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, 101595829 + ... + 101595834.

It is an arithmetic number, because the mean of its divisors is an integer number (203191664).

Almost surely, 2^609574989 is an apocalyptic number.

It is an amenable number.

609574989 is a deficient number, since it is larger than the sum of its proper divisors (203191667).

609574989 is a wasteful number, since it uses less digits than its factorization.

609574989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203191666.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 609574989 is about 24689.5724750349. The cubic root of 609574989 is about 847.8955965903.

The spelling of 609574989 in words is "six hundred nine million, five hundred seventy-four thousand, nine hundred eighty-nine".