609149 has 2 divisors, whose sum is σ = 609150. Its totient is φ = 609148.

The previous prime is 609143. The next prime is 609163. The reversal of 609149 is 941906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573049 + 36100 = 757^2 + 190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609149 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304574 + 304575.

It is an arithmetic number, because the mean of its divisors is an integer number (304575).

2⁶⁰⁹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

609149 is a deficient number, since it is larger than the sum of its proper divisors (1).

609149 is an equidigital number, since it uses as much as digits as its factorization.

609149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 609149 is about 780.4799805248. The cubic root of 609149 is about 84.7698039071.

The spelling of 609149 in words is "six hundred nine thousand, one hundred forty-nine".